I've had this problem, too.  I can see from my server logs that some of these messages get all the way into the "DATA" part of the SMTP dialog and then time out.  I'm starting to wonder if maybe an IPS somewhere is dropping packets that shouldn't be dropped.
 
Paul Reed
Chemistry


From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Jon Galbreath
Sent: Wednesday, January 21, 2009 2:51 PM
To: [log in to unmask]
Subject: [MSUNAG] Mail Disappearing?

Has anyone else had any users complaining of mail that never gets delivered?  I’ve only had one user so far, but unfortunately, I can kind of confirm his issue, so I have to look into it.

 

He’s only said that people are calling him because he hasn’t responded to mail that they sent him, but he apparently has never gotten.  I should note that this is off-campus mail that is falling into a black hole.

 

We’re running Exchange here, so mail is forwarded in from MSU’s servers via the standard forwarding in the web interface.  Mail within the Exchange org is working fine, as is most mail from the outside.

 

I did a few tests sending mail to myself from Yahoo and Gmail and they came through instantly.  However, when I sent a couple messages to myself from my Exchange server at home, they never showed.  But when I replied to a message I’d sent myself yesterday, it showed up instantly here.  Per the Exchange logs, the messages have never hit our servers.  Nor have I gotten any NDRs sent back to me.

 

I’m waiting for the user to get back to me with approximate times and domains that he’s missing mail from, but I thought I’d check if anyone else is having issues.

 

Thanks!

Jon

 

Jon Galbreath

MCSE/Security+

Systems Administrator

International Studies and Programs

Ph: 517-884-2144

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