[CentOS] help with sendmail closing relay
Scott Silva
ssilva at sgvwater.com
Fri Jun 4 23:38:36 UTC 2010
on 6-4-2010 8:10 AM Jerry Geis spake the following:
> I have centos 4.8 i686. It has stock sendmail. see file below.
>
> I am getting reports that it is an open relay. I have searched all
> around and
> it seems like it should be closed. I have dnl for
> accept_unresolvable_domains.
>
> What can I do to close my sendmail.
> Thanks,
>
> Jerry
>
<snip>
I know the m4 processor is very picky that things are in order..
http://www.sendmail.org/m4/intro.html
The general rules are that the order should be:
VERSIONID
OSTYPE
DOMAIN
FEATURE
local macro definitions
MAILER
LOCAL_CONFIG
LOCAL_RULE_*
LOCAL_RULESETS
If they get out of order, the m4 processor drops stuff
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