Tom Hendrikx:
> 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
That means clients get a slow timeout, unless you configure a
rule that sends a RESET to the client.
> 2) adding some access check in smtpd_mumble_restrictions that returns
> DEFER for all transactions that would otherwise be accepted.
That's certainly nicer than having clients time out.
Another option:
3) leave the port open on the firewall and disable the TCP service
in master.cf. That gives the clients a quick RESET.
Wietse
> 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?
>
> --
> Regards,
> Tom
>
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