On 12/21/2010 4:35 PM, Tom Hendrikx wrote: > > Hi, > > To do some maintenance work, I need to temporarily disable mail > acceptance in my postfix MX. I'm curious what is the best way to do > this. The 2 (obvious) options I came up with: > > 1) stop listening on tcp/25, f.i. by firewall adjustment > 2) adding some access check in smtpd_mumble_restrictions that returns > DEFER for all transactions that would otherwise be accepted. > > There is no backup/fallback/secondary MX that comes into play when I > start fumbling with this one. Is any of the above methods preferable? >
You could use soft_bounce See: http://www.postfix.org/postconf.5.html#soft_bounce for explanation. I've used this in the past, not sure if its the best practice, when I've had to move MX hosts under emergency circumstances. -Matt
