User sends email to outbound recipeint who claims they don't aways receive users email. In email queue on my side see the emails as being sent out. User does not receive NDR back. This is intermittent as I see emails inbound/outbound to this recipient. Another recipient claims when sending to this same user receives an NDR on occassion but is also intermittent as the first recipient. These two recipients are using private ISP's. Any other suggestions that may be looked into then the standard troubleshooting. No other users have notified of having this issue. Both recipeint claim they can send to users private email accout (gmail) and don't experience intermittent email delivery.
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If the queue is empty, your mail has probably gone out. If the external party (receiving end) doesn't get SOME messages that you sent to them, I'd be prepared to ask them to investigate *their* logs. Their SPAM filter may be over-sensitive or there may be a mailbox overflow or something. If you DO get an NDR, what does it say?
/RID
Running Exchange 2003, SP2, performed messge tracking, SMTP logging and diagnostic logging. Yes, mail goes outbound and inbound. Using a Barracuda appliance for SPAM which enables you to see all incoming/outgoing messages as that is our SMTP relay. One of the NDR's the recipeint received who was trying to send to my user:
Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
Gives the email address of my user
retry time not reached for any host after a long failure period
Business Accounts
Answer for Membership
by: Jinx_ITPosted on 2008-07-31 at 20:52:31ID: 22135392
Exchange 2003??
what standard troubleshooting have you used? message tracking? SMTP logging? DIagnostic Logging?
could be a DNS issue?