On Fri, Apr 03, 2009 at 11:45:17PM -0600, Jason Bailey, Sun Advocate Webmaster
wrote:
> In just a few portions of my mail log I see the following hostnames:
> 212453-app4.domain.com
> 207113-app1.domain.com
> 205107-app3.domain.com
> 207186-app2.domain.com
>
This assumes you have PCRE tables, adjusting to ordinary regexps is not
difficult:
unknown_sender_domain.pcre:
/^\d+-app\d\.example\.com$/ DUNNO
/^/ reject_unknown_sender_domain
main.cf:
smtpd_restriction_classes =
reject_most_unknown_sender_domains
pcre = pcre:${config_directory}/
reject_most_unknown_sender_domains =
check_sender_access ${pcre}unknown_sender_domain.pcre
smtpd_recipient_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
reject_most_unknown_sender_domains,
...
The more selective "restriction class" can be used safely anywhere you
can safely use the underlying "reject_unknown_sender_domain". You can
adjust the exception pattern or add more exceptions.
--
Viktor.
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