On Monday, May 6, 2013, Curt Lundgren wrote: > We're running Postfix on a SLES 11 server which is set up to relay to > Gmail. In the past few months delivery of internally generated Emails have > experienced delays, sometimes hours. Looking at the mailq command I see > lots of (gmail server said: 451 Please tyr again later (in reply to end of > DATA command)). > > It seemed like it must be something about Gmail being reluctant to accept > mail from the server, but we've set it up as an Inbound Gateway, so > anything it sends should be whitelisted. Looking at the headers on mail it > sends, Google is seeing the server as whitelisted. > > I opened a case with Google, they escalated it a couple of times and came > back with this: *"In looking at the logs you provided (thank you) the > message "451 Please try again later (in reply to end of DATA command))" > doesn't seem to be a Google issues message. We can tell this because of the > message tagging that we use. When Google issues an error message it will be > tagged with 'gsmtp' and for Postini it will similarly be tagged with > 'psmtp'. > > What I believe is happening here is while the messages are attempting to > be sent, they timeout before completion (during the DATA command). > > At this point, I'd recommend that you increase the timeout of the outbound > SMTP server to allow for the completion of the messages. If the timeout is > set to 1 minute, increase it to 2 minutes. Increasing the timeout on the > SMTP server shold help avoid these errors by letting the data section > complete and not having to wait the retry time and you should see a > reduction in the amount of 451 errors that are generated."* > > I've worked with Sendmail, and only have the faintest familiarity with > Postfix. I can't seem to find anything that suggests how to control > timeouts on outgoing messages. Any incoming messages to this server are > from other servers on campus, and there's never any problem receiving. > > Hopefully this is just an "add this line to main.cf" kind of thing. Any > Postfix experts out there? > > Curt > > --
Funny. We're seeing the same enormous delays recently in delivering locally-generated mail to Postini & on to Gmail. Our SMTP box is running IIS because that's the corporate IT staff wanted, but its timing out, too. This is good info, even though I don't have Postfix in my situation. I will increase the timeouts in our IIS SMTP process and see if mail gets delivered more promptly. Gibson > > -- Gibson Prichard Nashville, TN [email protected] -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en --- You received this message because you are subscribed to the Google Groups "NLUG" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
