content: <HTML><HEAD>
  <TITLE>Form 8-K</TITLE>
  </HEAD>
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  <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="4" COLOR="#000000"><B>UNITED
  STATES </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="4" COLOR="#000000"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
  ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Washington, D.C. 20549 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><HR WIDTH="17%" SIZE="1" NOSHADE COLOR="#000000"><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>FORM 8-K </B></FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"
  COLOR="#000000"><B>CURRENT REPORT </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="3" COLOR="#000000"><B>Pursuant
  to Section 13 or 15(d) of the Securities Exchange Act of 1934 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Date of Report (Date of earliest event reported):&nbsp;&nbsp;<B>February 18, 2003</B> </FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><HR WIDTH="17%" SIZE="1" NOSHADE COLOR="#000000"><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
  ALIGN="center"><FONT FACE="Times New Roman" SIZE="5" COLOR="#000000"><B>VALICERT, INC. </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Exact name of registrant as
  specified in its charter) </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">
  
  <TR>
  <TD VALIGN="bottom" WIDTH="31%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Delaware</B></FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="31%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>000-31109</B></FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="31%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>94-3297861</B></FONT></P></TD></TR>
  <TR>
  <TD VALIGN="top" ALIGN="center" WIDTH="31%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(State or other jurisdiction of incorporation)</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" ALIGN="center" WIDTH="31%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Commission File Number)</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" ALIGN="center" WIDTH="31%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(IRS Employer Identification No.)</FONT></P></TD></TR>
  </TABLE><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"
  ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>1215 Terra Bella Avenue </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Mountain View,
  California&nbsp;&nbsp;94043 </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(Address of principal executive offices)&nbsp;&nbsp;(Zip Code) </FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"
  COLOR="#000000">Registrant&#146;s telephone number, including area code:&nbsp;&nbsp;<B>(650) 567-5400</B> </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT
  SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>Not Applicable </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
  FACE="Times New Roman" SIZE="2" COLOR="#000000">(Former name or former address, if changed since last report) </FONT></P>
  
  <p Style='page-break-before:always'>
  <HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
  
  <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B><I>Item
  5.&nbsp;&nbsp;&nbsp;&nbsp;Other Matters. </I></B></FONT></P><P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">On February
  18, 2003, Valicert, Inc. (&#147;Valicert&#148;) entered into an Agreement and Plan of Reorganization and Merger with Tumbleweed Communications Corp. (&#147;Tumbleweed&#148;) and its wholly-owned subsidiary Velocity Acquisition Sub, Inc.
  (&#147;Sub&#148;) (the &#147;Reorganization Agreement&#148;). A copy of the Reorganization Agreement is attached hereto as Exhibit 2.1. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Pursuant to the terms of the Reorganization Agreement, Tumbleweed will acquire all of the outstanding shares of Valicert in a stock-for-stock transaction,
  where each share of Valicert common stock will be exchanged for .385 shares of Tumbleweed common stock, or approximately 9.8 million shares, which will represent approximately 24% of Tumbleweed&#146;s outstanding stock immediately following the
  closing of the merger. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">For further information, reference is
  made to the exhibit referred to above and in Item 7 below, the contents of which are incorporated by reference herein, and the joint press release issued by Valicert and Tumbleweed on February 18, 2003, attached hereto as Exhibit 99.1 announcing the
  signing of the Reorganization Agreement. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Tumbleweed intends to
  file a registration statement on Form S-4 in connection with the transaction, and Valicert and Tumbleweed intend to mail a joint proxy statement/prospectus to their respective stockholders in connection with the transaction. Investors and security
  holders of Valicert and Tumbleweed are urged to read the joint proxy statement/prospectus when it becomes available because it will contain important information about Valicert, Tumbleweed and the transaction. Investors and security holders may
  obtain a free copy of the joint proxy statement/prospectus (when it is available) at the SEC&#146;s web site at www.sec.gov. A free copy of the joint proxy statement/prospectus may also be obtained from Tumbleweed or Valicert. </FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Valicert and its executive officers and directors also may be deemed to be
  participants in the solicitation of proxies from the stockholders of Valicert and Tumbleweed in favor of the transaction. Information regarding such officers and directors is included in Valicert&#146;s proxy statement of its 2002 annual meeting of
  stockholders dated April 30, 2002. This document is available free of charge at the SEC&#146;s Web site at <U>www.sec.gov</U> and from Valicert. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P
  STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Tumbleweed and its executive officers and directors may be deemed to be participants in the solicitation of proxies from the stockholders of Valicert and
  Tumbleweed in favor of the transaction. Information regarding such officers and directors is included in Tumbleweed&#146;s </FONT>
  </P>
  
  <p Style='page-break-before:always'>
  <HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
  
  <P STYLE="margin-top:0px;margin-bottom:0px">
  <FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">proxy statement of its 2002 annual meeting of stockholders dated April 30, 2002. This document is available free of charge at the SEC&#146;s
  Web site at <U>www.sec.gov</U> and from Tumbleweed. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">In addition
  to the registration statement on Form S-4 to be filed by Tumbleweed in connection with the transaction, and the joint proxy statement/prospectus to be mailed to the stockholders of Valicert and Tumbleweed in connection with the transaction, each of
  Valicert and Tumbleweed file annual, quarterly and special reports, proxy and information statements, and other information with the SEC. Investors may read and copy any of these reports, statements and other information at the SEC&#146;s public
  reference rooms located at 450 5th Street, N.W., Washington, D.C., 20549, or any of the SEC&#146;s other public reference rooms located in New York and Chicago. Investors should call the SEC at 1-800-SEC-0330 for further information on these public
  reference rooms. The reports, statements and other information filed by Valicert and Tumbleweed with the SEC are also available for free at the SEC&#146;s web site at <U>www.sec.gov</U>. A free copy of these reports, statements and other information
  may also be obtained from Valicert at their website at <U>www.valicert.com</U> or Tumbleweed at their website <U>www.tumbleweed.com</U>. </FONT></P>
  
  <p Style='page-break-before:always'>
  <HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
  
  <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B><I>Item
  7.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits. </I></B></FONT></P><P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
  <TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
  <TR>
  <TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">(c)</FONT></TD>
  <TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Exhibits. </FONT></TD></TR></TABLE><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">
  
  <TR>
  <TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>Exhibit&nbsp;No.</B></FONT></P><HR WIDTH="68" SIZE="1" NOSHADE COLOR="#000000"></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="bottom" COLSPAN="3"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>Description</B></FONT></P><HR WIDTH="73" SIZE="1" NOSHADE ALIGN="left" COLOR="#000000"></TD></TR>
  <TR>
  <TD VALIGN="top" ALIGN="center" WIDTH="7%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">&nbsp;&nbsp;2.1</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" COLSPAN="3" WIDTH="90%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Agreement and Plan of Reorganization and Merger, dated as of February 18, 2003, by and among Tumbleweed
  Communications Corp., Velocity Acquisition Sub, Inc. and Valicert, Inc.</FONT></P></TD></TR>
  <TR>
  <TD HEIGHT="5"></TD></TR>
  <TR>
  <TD VALIGN="top" ALIGN="center" WIDTH="7%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">99.1</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" COLSPAN="3" WIDTH="90%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Press release dated February 18, 2003.</FONT></P></TD></TR>
  </TABLE>
  
  <p Style='page-break-before:always'>
  <HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
  
  <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>SIGNATURES
  </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Pursuant to the requirements of the
  Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. </FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0">
  
  <TR>
  <TD COLSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="top" COLSPAN="3" WIDTH="44%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B>VALICERT, INC.</B></FONT></P></TD></TR>
  <TR>
  <TD HEIGHT="8"></TD></TR>
  <TR>
  <TD VALIGN="top" COLSPAN="3" WIDTH="44%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Date:&nbsp;&nbsp;March 5, 2003</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD></TR>
  <TR>
  <TD HEIGHT="16"></TD></TR>
  <TR>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="top" WIDTH="2%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">By:</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="top" WIDTH="44%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;T<SMALL>IMOTHY</SMALL>
  C<SMALL>ONLEY&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SMALL></FONT></P></TD></TR>
  <TR>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
  <TR>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD><FONT SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;</FONT></TD>
  <TD VALIGN="bottom" WIDTH="44%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Timothy Conley</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"
  COLOR="#000000">Chief Financial Officer</FONT></P></TD></TR>
  </TABLE>
  
  <p Style='page-break-before:always'>
  <HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">
  
  <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P><P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"><B><U>EXHIBIT
  INDEX</U> </B></FONT></P><P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
  <TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">
  
  <TR>
  <TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>Exhibit&nbsp;No.</B></FONT></P><HR WIDTH="62" SIZE="1" NOSHADE COLOR="#000000"></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="bottom" COLSPAN="3"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><B>Description</B></FONT></P><HR WIDTH="65" SIZE="1" NOSHADE ALIGN="left" COLOR="#000000"></TD></TR>
  <TR>
  <TD VALIGN="top" ALIGN="center" WIDTH="7%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">&nbsp;&nbsp;2.1</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" COLSPAN="3" WIDTH="90%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Agreement and Plan of Reorganization and Merger, dated as of February 18, 2003, by and among Tumbleweed
  Communications Corp., Velocity Acquisition Sub, Inc. and Valicert, Inc.</FONT></P></TD></TR>
  <TR>
  <TD HEIGHT="5"></TD></TR>
  <TR>
  <TD VALIGN="top" ALIGN="center" WIDTH="7%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">99.1</FONT></P></TD>
  <TD VALIGN="bottom" WIDTH="3%"><FONT FACE="Times New Roman" SIZE="1">&nbsp;&nbsp;</FONT></TD>
  <TD VALIGN="top" COLSPAN="3" WIDTH="90%"> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:2%; text-indent:-2%"><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000">Press release dated February 18, 2003.</FONT></P></TD></TR>
  </TABLE>
  </BODY></HTML>
metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "d8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 20926}]
metadata_filer: {"company-data": {"conformed-name": "VALICERT INC", "cik": "0001114040", "assigned-sic": "7371", "irs-number": "943297861", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-31109", "film-number": "03593196"}, "business-address": {"street1": "339 N BERNARDO AVE", "city": "MOUNTAIN VIEW", "state": "CA", "zip": "94043", "phone": "6505675400"}, "mail-address": {"street1": "339 N BERNARDO AVENUE", "city": "MOUNTAIN VIEW", "state": "CA", "zip": "94043"}}
text: Form 8-K
  UNITED
  STATES
  SECURITIES AND EXCHANGE COMMISSION
  Washington, D.C. 20549
  FORM 8-K
  CURRENT REPORT
  Pursuant
  to Section 13 or 15(d) of the Securities Exchange Act of 1934
  Date of Report (Date of earliest event reported):
  February 18, 2003
  VALICERT, INC.
  (Exact name of registrant as
  specified in its charter)
  Delaware
  000-31109
  94-3297861
  (State or other jurisdiction of incorporation)
  (Commission File Number)
  (IRS Employer Identification No.)
  1215 Terra Bella Avenue
  Mountain View,
  California  94043
  (Address of principal executive offices)  (Zip Code)
  Registrant's telephone number, including area code:
  (650) 567-5400
  Not Applicable
  (Former name or former address, if changed since last report)
  Item
  5.    Other Matters.
  On February
  18, 2003, Valicert, Inc. ("Valicert") entered into an Agreement and Plan of Reorganization and Merger with Tumbleweed Communications Corp. ("Tumbleweed") and its wholly-owned subsidiary Velocity Acquisition Sub, Inc.
  ("Sub") (the "Reorganization Agreement"). A copy of the Reorganization Agreement is attached hereto as Exhibit 2.1.
  Pursuant to the terms of the Reorganization Agreement, Tumbleweed will acquire all of the outstanding shares of Valicert in a stock-for-stock transaction,
  where each share of Valicert common stock will be exchanged for .385 shares of Tumbleweed common stock, or approximately 9.8 million shares, which will represent approximately 24% of Tumbleweed's outstanding stock immediately following the
  closing of the merger.
  For further information, reference is
  made to the exhibit referred to above and in Item 7 below, the contents of which are incorporated by reference herein, and the joint press release issued by Valicert and Tumbleweed on February 18, 2003, attached hereto as Exhibit 99.1 announcing the
  signing of the Reorganization Agreement.
  Tumbleweed intends to
  file a registration statement on Form S-4 in connection with the transaction, and Valicert and Tumbleweed intend to mail a joint proxy statement/prospectus to their respective stockholders in connection with the transaction. Investors and security
  holders of Valicert and Tumbleweed are urged to read the joint proxy statement/prospectus when it becomes available because it will contain important information about Valicert, Tumbleweed and the transaction. Investors and security holders may
  obtain a free copy of the joint proxy statement/prospectus (when it is available) at the SEC's web site at www.sec.gov. A free copy of the joint proxy statement/prospectus may also be obtained from Tumbleweed or Valicert.
  Valicert and its executive officers and directors also may be deemed to be
  participants in the solicitation of proxies from the stockholders of Valicert and Tumbleweed in favor of the transaction. Information regarding such officers and directors is included in Valicert's proxy statement of its 2002 annual meeting of
  stockholders dated April 30, 2002. This document is available free of charge at the SEC's Web site at
  www.sec.gov
  and from Valicert.
  Tumbleweed and its executive officers and directors may be deemed to be participants in the solicitation of proxies from the stockholders of Valicert and
  Tumbleweed in favor of the transaction. Information regarding such officers and directors is included in Tumbleweed's
  proxy statement of its 2002 annual meeting of stockholders dated April 30, 2002. This document is available free of charge at the SEC's
  Web site at
  www.sec.gov
  and from Tumbleweed.
  In addition
  to the registration statement on Form S-4 to be filed by Tumbleweed in connection with the transaction, and the joint proxy statement/prospectus to be mailed to the stockholders of Valicert and Tumbleweed in connection with the transaction, each of
  Valicert and Tumbleweed file annual, quarterly and special reports, proxy and information statements, and other information with the SEC. Investors may read and copy any of these reports, statements and other information at the SEC's public
  reference rooms located at 450 5th Street, N.W., Washington, D.C., 20549, or any of the SEC's other public reference rooms located in New York and Chicago. Investors should call the SEC at 1-800-SEC-0330 for further information on these public
  reference rooms. The reports, statements and other information filed by Valicert and Tumbleweed with the SEC are also available for free at the SEC's web site at
  www.sec.gov
  . A free copy of these reports, statements and other information
  may also be obtained from Valicert at their website at
  www.valicert.com
  or Tumbleweed at their website
  www.tumbleweed.com
  .
  Item
  7.    Financial Statements and Exhibits.
  (c)
  Exhibits.
  Exhibit No.
  Description
  2.1
  Agreement and Plan of Reorganization and Merger, dated as of February 18, 2003, by and among Tumbleweed
  Communications Corp., Velocity Acquisition Sub, Inc. and Valicert, Inc.
  99.1
  Press release dated February 18, 2003.
  SIGNATURES
  Pursuant to the requirements of the
  Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
  VALICERT, INC.
  Date:  March 5, 2003
  By:
  /
  S
  /    T
  IMOTHY
  C
  ONLEY
  Timothy Conley
  Chief Financial Officer
  EXHIBIT
  INDEX
  Exhibit No.
  Description
  2.1
  Agreement and Plan of Reorganization and Merger, dated as of February 18, 2003, by and among Tumbleweed
  Communications Corp., Velocity Acquisition Sub, Inc. and Valicert, Inc.
  99.1
  Press release dated February 18, 2003.