Has anyone here seen addressing problems where an invalid X400 address is used as the reply to address rather than the SMTP address for the user, as illustrated in the From field below. If so, is there a fix or configuration change that will make this problem go away? From: John Smith [mailto:IMCEAEX-_O=HAHT_OU=RALEIGH_CN=RECIPIENTS_CN=STAFF+5FMBXS_CN=JOHN+2ES MITH@xxxxxxxx] Sent: vrijdag 6 juni 2003 12:59 To: Janine van Brun Subject: RE: BV Office e-mail I've been searching the M$ KB for something that describes this problem, and have found: http://support.microsoft.com/default.aspx?scid=kb;en-us;269576 http://support.microsoft.com/default.aspx?scid=kb;en-us;269576 http://support.microsoft.com/default.aspx?scid=kb;en-us;193782 In each case, the M$ solution is to apply the latest SP and all these issues were supposedly resolved with SP4 or earlier. I have verified all servers have had SP4 applies, yet the problem persists. Any help will be appreciated. Some background: - This is an Exchange 5.5 sp 4 installation running on Window NT 4 Server. - The sender (John Smith) listed in the From address is an English speaking US based user working in Organization A (HAHT). Client (Outlook 2002) and OS (WinXP Pro) were installed using US EN installers. - The recipient (Janine van Brun) is a French speaking UK based user in Organization B (HAHTMAIL). Client (Outlook 2002) and OS (Win 2K Pro) were installed using International FR installers. - Organization A (HAHT) is connected to Organization B (HAHTMAIL) using X400 connectors over a TCP transport stack. - Org A (HAHT) has one site (RALEIGH) with one server (RALEIGHX). - Org B (HAHTMAIL) has two sites (USA and LON) with 1 server each (USAEXCH and LONEXCH). - RALEIGHX has two X400 connectors, one (RAL_to_USA) pointing to USAEXCH and one (RAL_to_LON) to LONEXCH . - USAEXCH has one X400 connector (USA_to_RAL) to RALEIGHX and a site connector (LON) to LONEXCH. - LONEXCH has one X400 connector (LON_to_RAL) to RALEIGHX and a site connector (USA) to USAEXCH. - All X400 connectors use IP addresses for the stack address - The To address for Janine is an Exchange mailbox in the Org A (HAHT) GAL configured to forward messages to an alternate recipient on the Delivery Options tab. The alternate recipient is an X400 Custom Recipient that points to Janine's Exchange mailbox in Org B (HAHTMAIL). - One-off address templates for English/Britain, English/USA, French, and Nederlands/NLD have been imported on all servers. - Input Locales for English (USA), English (United Kingdom), French (Standard), and Dutch (Standard) have been installed in the Regional Settings control panel.