>>>>> "Sad" == Sad Clouds via Postfix-users <[email protected]> writes:
> On Mon, 16 Mar 2026 11:59:54 -0400 (EDT) > Wietse Venema via Postfix-users <[email protected]> wrote: >> b. This is the same problem as greylisting (when greylisting is >> used without aggregating data from clients with the same IP address >> prefix). > Hello, I have a follow up question about this and sharing postscreen > allowlist. > I'm considering load balancing two mail servers via DNS records: > example.com. IN MX 10 mail1.example.com. > example.com. IN MX 10 mail2.example.com. > Each mail server will run it own instances of postfix and dovecot. I > think I can synchronise dovecot mailboxes via replication. The goal > is redundancy, i.e. one mail server could be powered off and another > mail server has duplicate state to continue running the same mail > services. I would strongly suggest you stick with dovecot v2.3 if you go this route, since v2.4 (release late last year) is not supporting replication any more. At least not in the Community Edition. I suspect you can pay them for proper clustering solutions. It might be better to just run a single dovecot instance on one of the pair, and just have them both deliver to the same instance. If you set things up properly, a failure to deliver to dovecot would just end up holding the email in the postfix queue. But I'm no expert here and I don't bother with this in my personal domain. John _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
