DOCUMENT:Q250926 05-JUN-2001 [exchange] TITLE :XFOR: GroupShield Interferes with POP3/IMAP with SSL Enabled PRODUCT :Microsoft Exchange PROD/VER::5.5 OPER/SYS: KEYWORDS:exc55 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== When a user is attempting to download mail from Microsoft Exchange Server by means of POP3 or IMAP with Secure Sockets Layer (SSL) enabled, the user may get the following error message even though the server certificates have been installed properly: A secure connection to the server could not be established. Account: 'accountname' Server: 'servername', Protocol: POP3, Port: 995, Secure (SSL): Yes, Error Number: 0x800CCC1A You may also see the following events logged in the Exchange Server event log: EventID: 11508 Source: MSExchangePOP3 Description: Accept clients on POP3 interface failed in function HrRegisterProtocol with error 0x2741. EventID: 1194 Source: MSExchangeIS Description: Accept client on external interface POP3 failed with error 0x80004005. EventID: 11506 Source: MSExchange IMAP4 Description: Accept clients on IMAP4 interface failed in function HrRegisterProtocol with error 0x2741. EventID: 1194 Source: MSExchangeIS Description: Accept client on external interface IMAP4 failed with error 0x80004005. CAUSE ===== This problem can be caused if the Network Associates GroupShield for Microsoft Exchange virus program is running on the server containing the POP3 mailbox. RESOLUTION ========== Completely uninstall GroupShield and attempt to connect to Exchange Server using the POP3 client with SSL enabled. After you verify that this is successful, you should be able to re-install GroupShield and have no further problems. WORKAROUND ========== Disabling SSL enables the client to download mail if GroupShield cannot be immediately uninstalled and reinstalled. MORE INFORMATION ================ The third-party products discussed in this article are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability. Additional query words: ====================================================================== Keywords : exc55 Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : :5.5 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.