Re: [exim] check_srv mx exists

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Auteur: Ian Eiloart
Datum:  
Aan: Richard Clayton
CC: exim-users@exim.org, Klaus Ethgen, Jeremy Harris
Onderwerp: Re: [exim] check_srv mx exists

> On 21 Jan 2015, at 13:33, Richard Clayton <richard@???> wrote:
>
>> For me, as the administrator of an MTA: if my MTA
>> cannot return a bounce to a sender then I cannot maintain overall
>> reliability of email, in the notification of error conditions.
>
> as a community we'd much rather than you refused to accept a message
> (5xx) rather than accepting it and generating a bounce later !


Of course, if you have an SPF pass, this isn’t an issue. You won’t be creating backscatter.

Well, I guess that’s assuming that the domain hasn’t been registered with bad MX records (do people do this on purpose?). You probably shouldn’t trust domains with +all.

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Ian Eiloart
Postmaster, University of Sussex
+44 (0) 1273 87-3148