Problems with NDR |
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ImInAfrica 
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Joined: 27 June 2006 Location: FL, USA Status: Offline Points: 60 |
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 Topic: Problems with NDRPosted: 25 June 2011 at 2:15pm |
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Hi, Below please see part of log from our SF installation. We had an incidence where a specific mail server run out of disk space. the mail server reacted correctly by declining the message. SF acknowledged it, and acted correctly, BUT couldn't send the NDR back. I have marked the line in RED below. Has anyone seen anything like this before? 06/17/11 10:55:03:460 -- (3072) RCPT TO: user@mydomain.com accepted 06/17/11 10:55:03:585 -- (3072) EMail from sender@senderdomain.com to user@mydomain.com passes Bayesian filter - 0% spam (15ms) 06/17/11 10:55:03:585 -- (3072) Checking SURBL 06/17/11 10:55:03:585 -- (3072) Checking URLs in emails against MAPS 06/17/11 10:55:03:585 -- (3072) - URLs In MAPS search done... 06/17/11 10:55:03:585 -- (3072) Start virus scan 06/17/11 10:55:03:585 -- (3072) Starting queueing procedures 06/17/11 10:55:03:585 -- (3072) EMail from sender@senderdomain.com to user@mydomain.com was queued. Size: 1 KB, 1024 bytes 06/17/11 10:55:03:585 -- (5472) Sending email from sender@senderdomain.com to user@mydomain.com -- 06/17/11 10:55:03:726 -- (5472) EMail from: sender@senderdomain.com to: user@mydomain.com -- was returned to sender - server error - pop.bluelightit.com:25 said: Your message was received but it could not be saved. Please retry later. -- 06/17/11 10:55:03:742 -- (3072) Starting bayesian procedures 06/17/11 10:55:03:757 -- (3652) Time to add Msg to Bayes corpus:0 06/17/11 10:55:03:820 -- (3072) Disconnect 06/17/11 10:55:03:867 -- (5472) There was an error sending the NDR: Your message was received but it could not be saved. Please retry later. -- 06/17/11 10:55:03:867 -- (5472) server error - my.mailserver.com:25 said: Your message was received but it could not be saved. Please retry later. -- Thanks.
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LogSat
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Joined: 25 January 2005 Location: United States Status: Offline Points: 4104 |
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Posted: 26 June 2011 at 10:03pm |
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The message being logged "Your message was received but it could not be saved. Please retry later" is what SpamFilter received when forwarding both the original email to the destination SMTP server for that recipient's domain (pop.bluelightit.com) and then to your default destination SMTP server when SpamFilter attempted to deliver the NDR (my.mailserver.com).
What SpamFilter does when receiving an error when forwarding to your destination SMTP server depends on the kind of error that your mail server output - a 400 error or a 500 error. How SpamFilter behaves in this case is determined by the following settings in the SpamFilter.ini file: ;Determines if SpamFilter should hold in the queue emails that were rejected by the destination SMTP server with an error in the 4xy range QueueIfDestinationError400=true
;Determines if SpamFilter should hold in the queue emails that were rejected by the destination SMTP server with an error in the 5xy range QueueIfDestinationError500=false If your destination SMTP server is offline completely and unreachable, SpamFilter will queue the emails until it is back online. The NDR email to the sender is thus sent if one of the above settings is set to "false" and is triggered, meaning the email is not queued for re-delivery. For example, with the settings above, if your destination SMTP server rejects SpamFilter's email with 500 error, then SpamFilter will not queue the email for re-delivery and will send the NDR. This NDR email is forwarded to your default SMTP server for delivery. If however your default SMTP server rejects this NDR, SpamFilter will not queue the NDR for delivery and will give up trying. |
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ImInAfrica
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Joined: 27 June 2006 Location: FL, USA Status: Offline Points: 60 |
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Posted: 28 June 2011 at 4:59pm |
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ok got it. My system was set to send NDR via the same SMTP that is accepting the emails. I have found the entry called:
NotificationSMTPServer= and have entered another smtp server address. Hopefully this won't happen again. Thank you Roberto.
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