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troubleshooting Question

Exchange 2003 Hangs on RCPT TO Command

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0xSaPx0 asked on
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4 Comments1 Solution1680 ViewsLast Modified:
I have a Windows 2003 SBS Server running Exchange 2003 SP2.

It runs GFI MailEssentials for Spam, and Trend Message Security for A/V.

Recently mail from some outbound senders does not deliver to internal users. I would guess 80-90% does, but others dont.

Manually telnetting to port 25 reveals a banner and a standard SMTP session. It goes through the HELO or EHLO, MAIL FROM, but when I type RCPT TO:administrator@mydomain.com it hangs and does nothing.

I ran SMTPDIAG from the Microsoft site and same problem. It goes through the DNS lookups no problem but hangs on the RCPT TO Command.

I have turned off the GFI and Trend Services completely and see no change. Using HELO instead of EHLO doesn't seem to matter.

Thanks !
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