Re: [exim] Limiting verification callouts to own hosts

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Συντάκτης: Renaud Allard
Ημερομηνία:  
Προς: Martijn Grendelman
Υ/ο: exim-users
Αντικείμενο: Re: [exim] Limiting verification callouts to own hosts


Martijn Grendelman wrote:
> Hi,
>
> I am trying to make my fallback mail server reject mail for non-existent
> users during SMTP, so I want to do recipient verification callouts to
> the primary mail server.
>
> The problem is, that the fallback also relays mail for some domains that
> have different primary servers, and I don't want to do callouts to those
> servers.
>
> Is there a way to restrict verification callouts to certain hosts?
>
> The fallback does not have any authoritative knowledge about which
> domains end up at OUR primary, that is decided during routing exclusively.
>
> An ACL statement like:
>
> verify        = recipient/callout=10s,defer_ok

>
> does the verification routing and the callout to the resulting target
> host at once, so I can't fix this in the ACL.
>
> I haven't found anything useful in the chapter about callout parameters
> in the manual. Any suggestions?
>


Just add a line in your ACL

domains = domain1.tld : domain2.tld
verify = recipient/callout=10s,defer_ok