3 votes
Accepted

why gmail smtp reply message size limit is different

Your test has determined the maximum message size that the servers at mx.google.com will receive, but those servers aren't likely hosting the actual user mailboxes. The servers at mx.google.com sit at ...
  • 109k
2 votes
Accepted

How to trace/find "lost" emails with log files and doveadm?

Users may sometimes complain that they have lost emails. The problem is almost always that this was done by one of the user’s email clients accidentally. Especially accidentally configuring a “POP3 ...
  • 7,354
2 votes
Accepted

On Premise antispam and MS 365 Hybrid deployment

You need two different public IP addresses. One will forward TCP port 25 to your antispam system and will be used as your public MX record. The second one will forward TCP port 25 to your Exchange ...
  • 69k
1 vote

why gmail smtp reply message size limit is different

The limit is whatever they do accept and is likely to have changed and change again, so for a current answer on that just try it or ask Google. As to why someone would document a different limit than ...
  • 7,354
1 vote
Accepted

How to merge in Dovecot extra fields from system accounts to passwd-file format?

I think the easiest way to merge your user list with your quota configuration is to chain multiple user databases. You want the original lookup to remember the result and continue, and the additional ...
  • 7,354

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