Matus UHLAR - fantomas via Postfix-users:
> as I maintain some mail gateways with postfix, I would like to discard the
> DSN ehlo keyword, from all hosts but internal network.
>
> I see that with smtpd_discard_ehlo_keyword_address_maps
> "Tables will be searched in the specified order until a match is found."
>
> but is it possible to allow all keywords from internal network and drop DSN
> from everywhere else?
>
> should I use workaround and use dummy silend-discard without other keyword?
>
> smtpd_discard_ehlo_keyword_address_maps =
> cidr:{ {10/8 silent-discard} {0/0 silent-discard,dsn} }
Wietse Venema via Postfix-users:
smtpd_discard_ehlo_keyword_address_maps =
cidr:{ {!10/8 silent-discard,dsn} }
On 23.02.24 11:12, Wietse Venema via Postfix-users wrote:
But that does not generalize to hosts with IPv4 and IPv6. In that case,
your approach will be more suitable.
Thank you.
For evidence, I have set it up only on port 25 using master.cf:
smtp inet n - y - 1 postscreen
smtpd pass - - y - - smtpd
-o smtpd_discard_ehlo_keywords=silent-discard,dsn
thus, it does not apply on submission and smtps ports
and main.cf:
smtpd_discard_ehlo_keyword_address_maps = cidr:/etc/postfix/discard_keywords
/etc/postfix/discard_keywords contains:
10.0.0.0/8 silent-discard
192.168.0.0/16 silent-discard
This way, I was able to also discard other keywords from other internal
clients.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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