Chris Boylan: > We're going to do a mailing to our customers this week (2000+) and I'm trying > to make sure our configuration, which is new, is set up appropriately. > > The email is coming from outlook as a list of lists apparently so it'll show > up on the submission port as a large Bcc list. Looks like I want to > temporarily increase smtpd_recipient_limit in master.cf
That is a good idea. The SMTP standard says a server should accept at least 100. Postfix has a finite limit to stop an out-of-control client. > Is there a setting that controls how many emails postfix will attempt to > delivery in one connection? I'd like to avoid submitting, for example, 50 > emails to some mail server at the same time and having someone/something flip > out. See: http://www.postfix.org/postconf.5.html#smtp_destination_recipient_limit > Additionally, I was thinking about setting smtp_recipient_limit to like 10-20 > since we have a small number of email accounts. Any downside to this - I was > specifically worrying about bounces from old customers using (dead) gmail > accounts. You mean smtpd_recipient_limit? With 10 valid addresses, it is unlikely but still possible to get mail with more recipients, when address extensions are in use (the same user effectively has an unlimited number of email addresses). See: http://www.postfix.org/postconf.5.html#recipient_delimiter Wietse
