On Tue, 15 Apr 2008, Marc Sherman wrote:
>
> Why allow TLS on port 25 at all? There's not much security value in TLS
> for random MTA-MTA traffic. If your users are all using 587 for
> submission, you can put:
>
> tls_advertise_hosts = ${if eq{$interface_port}{587}{*}{}}
I recommend using different IP addresses for submission and relay
because of this kind of interop problem.
Tony.
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