On Thu, 18 Mar 2021 at 23:13, Viktor Dukhovni <postfix-us...@dukhovni.org>
wrote:
> On Thu, Mar 18, 2021 at 10:21:02PM +0530, Durga Prasad Malyala wrote:
>
> > I am getting the error "Sender address rejected: Domain not found
> exception"
> > in my mail server.
>
> Are you sure the word "exception" is there? Postfix does not generate
> messages, but it does generate "Domain not found" when a domain does
> not exist or has no MX or A, AAAA records.
>
> > The sender domain has - a special character as well in their domain like
> > abc-dfgh.co.in.
>
> If you want usable help, you'll need to be willing to post the actual
> domain name, not an obfuscated version.
>
> > after googling I created a file called no_a_record.pcre with the
> following
> > contents.
>
> The first line below does not look like a valid PCRE table pattern.
>
> > smsupp...@abc-dfgh.co.in
> > /^.*abc-dfgh.co.in$/ OK
> >
> > also added in main.cf. ...
> > smtpd_sender_restrictions =
> > check_sender_access hash:/etc/postfix/access,
> > pcre:/etc/postfix/no_a_record.pcre,
> > reject_unknown_sender_domain
>
> You really should write:
>
> smtpd_sender_restrictions =
> check_sender_access hash:/etc/postfix/access,
> check_sender_access pcre:/etc/postfix/no_a_record.pcre,
> reject_unknown_sender_domain
>
> but again, post the output of "postconf -nf", being careful to
> not fold any lines, or otherwise add or remove whitespace.
> Do not send HTML email, compose it as plain text.
>
> > however it is not working. Can someone please help.
>
> Post the *actual* domain name in question. Also your "postconf -nf"
> output as requested above.
>
> --
> Viktor.
>
Thank You Victor for your quick response.
You are right the word exception is not there. My Mistake - it was my ask
actually to create an exception..
the domain is ucc-bsnl.co.in
The Log is:
Mar 18 23:09:25 mx5 postfix/smtpd[6039]: NOQUEUE: reject: RCPT from
mail-eopbgr1390048.outbound.protection.outlook.com[40.107.139.48]: 450
4.1.8 <dltsupp...@ucc-bsnl.co.in>: Sender address rejected: Domain not
found; from=<dltsupp...@ucc-bsnl.co.in> to=<d...@datasoftcomnet.com>
proto=ESMTP helo=<IND01-BO1-obe.outbound.protection.outlook.com>
Is this OK?
smtpd_sender_restrictions =
check_sender_access hash:/etc/postfix/access,
check_sender_access pcre:/etc/postfix/no_a_record.pcre,
check_sender_access hash:/etc/postfix/joeweindb,
check_sender_access hash:/etc/postfix/ransomwaredombl,
reject_unknown_sender_domain
Regards
DP
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