We had a problem receiving some mail. Typically we saw it with forwarded messages. We were able to determine that initial contact was being made by the sending server then nothing else. It turned out the campus IDP was blocking the message. The E-mail did not conform the SMTP standard for line length. You might want to check with Joe Bydzyn to see if packets are being dropped to your mail server. ****************************** David Vietti Systems Administration Manager Michigan State University Physical Plant Division Room 1 Physical Plant East Lansing, MI 48824 (517)432-0240 Office (517)353-5001 fax [log in to unmask] ****************************** -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Kim Geiger Sent: Thursday, May 31, 2007 9:29 AM To: [log in to unmask] Subject: [MSUNAG] email troubleshooting We run our own mail server. Recently, one user in particular has failed to receive email from a Hotmail and an AOL address. Both were replies to mail from her, so presumably the addressing was correct. Logs show lots of other mail from Hotmail and AOL, but nothing from the address of this user's correspondents--no blocks, no refusals, nothing. Can anyone think of a reason why this might be happening? It's hard to diagnose a non-event... I have a vague recollection of AOL having some issue with mail from MSU, but that was a while ago and wasn't with them sending to us, but of us to them. Anyway, thanks for any ideas. -- Kim Geiger Information Technologist Broadcasting Services Michigan State University 517-432-3120 x 429