• Twitter
  • FaceBook

Exchange Server Forums

Forums | Register | Login | My Profile | Inbox | RSS RSS icon | My Subscription | My Forums | Address Book | Member List | Search | FAQ | Ticket List | Log Out

Messages Occasionally being dropped

Users viewing this topic: none

Logged in as: Guest
  Printable Version
All Forums >> [Microsoft Exchange 2003] >> General >> Messages Occasionally being dropped Page: [1]
Message << Older Topic   Newer Topic >>
Messages Occasionally being dropped - 30.Mar.2009 6:02:48 PM   


Posts: 13
Joined: 25.Mar.2009
Status: offline
I am using exchange server 2003 for our email server. Our company recently went through a name change so I have to add additional email addresses for all our users. I added the new address to the default recipient policy and made it the default email address. I left the original address as well.

I am using SpamTitan as a spam filter and it relays valid emails to the exchange server. The Exchange server is on address

For some reason, messages are occasionally being dropped. If I look at the log files from SpamTitan, for a particular day I found over 70 emails successfully delivered to a particular user and 5 failures to that same recipient with the following error

Recipient address rejected: undeliverable address: host[] said: 550 5.1.1 User unknown (in reply to RCPT TO command);

Does anyone know why this may be happening? I have send a number of test emails from various domains and they always get through.

I can not find any logs on the Exchange server  for these rejections. Where would I look to find these?

Post #: 1

Page:   [1] << Older Topic    Newer Topic >>
All Forums >> [Microsoft Exchange 2003] >> General >> Messages Occasionally being dropped Page: [1]
Jump to:

New Messages No New Messages
Hot Topic w/ New Messages Hot Topic w/o New Messages
Locked w/ New Messages Locked w/o New Messages
 Post New Thread
 Reply to Message
 Post New Poll
 Submit Vote
 Delete My Own Post
 Delete My Own Thread
 Rate Posts

Follow TechGenix on Twitter