That's what I had suspected too. Now I have also noticed that the spam load has increased tremendously and that kind of coincides with these kind of problems. Every day I have to go to IMS's Queue and delte blank originator emails manually.
Does that mean the server gets so overloaded that it cannot handle anymore SMTP requests, so it rejects the emails and it bounces the message or it just goes to the next MX record server that is not available and that one rejects the emails? How can I find out which server is bouncing the emails? As for the lowest cost server, I thought that was always the case. So does it depends on the DNS server's cache that the sending mail server is using? Thanks --Alex -----Original Message----- From: Martin Blackstone [mailto:[EMAIL PROTECTED] Sent: Thursday, November 06, 2003 12:43 PM To: Exchange Discussions Subject: RE: Sporadic Email Problem It looks like you have 6 different MX records. Verify that each one can receive email for that domain. You may have one that's messed up and is rejecting. Remember, just because one has the lowest cost, doesn't mean its always going to receive the mail. -----Original Message----- From: Alex Alborzfard [mailto:[EMAIL PROTECTED] Sent: Thursday, November 06, 2003 9:26 AM To: Exchange Discussions Subject: Sporadic Email Problem >From time to time users cannot receive emails from outside. The messages bounce with the SMTP 550 relaying error message. The server is up and all the services are running fine. Below is a copy of one message sent from Yahoo: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Message/delivery-status Reporting-MTA: dns;identixps08.identix.com Received-From-MTA: dns;web20303.mail.yahoo.com Arrival-Date: Thu, 6 Nov 2003 11:28:29 -0500 Final-Recipient: rfc822;[EMAIL PROTECTED] Action: failed Status: 5.5.0 Diagnostic-Code: smtp;550 <[EMAIL PROTECTED]>... Relaying denied X-Display-Name: John Smith +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ EX 5.5, SP4 on NT 4 SP6a There is not much free space to turn SMTP logging on. What could be the possible culprits? Thanks --Alex _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang =english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang =english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
