From: Thomas Anderson (neocalifornia.usa.com)
Date: Mon Feb 02 2004 - 04:21:30 CST

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----- Original Message -----
From: Dean Strik <deanstack.nl>
Date: Fri, 30 Jan 2004 20:33:22 +0100
To: Dean Strik <deanstack.nl>
Subject: Re: how to reject mail from existing domain but has no MX record

> Dean Strik wrote:
> > Thomas Anderson wrote:
> > > Does someone know how to reject mails coming from existing domain but
> > > has no MX record.
> >
> > This would violate the specs. A domain is not required to have an MX
> > record. Having an address ('A') record is aloowed as well (though most
> > proper sites have MX records - I don't know a site that hasn't really).
>
> Duh, actually I know plenty. I shouldn't think of <domain.tld> as
> domains only. But this realisation makes my point stronger: any host
> from which you send mail using <userhost.domain.tld> would have to have
> an MX record according to your (Thomas's) wishes. It's obvious that
> many, many don't.
>
> > To reject mail to sites that have neither MX or A records, you can use
> > "reject_unknown_sender_domain" in your smtpd_*_restrictions.

OK but how do you suggest to do it.
I have reject_unknown_senderdomain in my smtp_recepient_restrictions but if you send mail for domain.com and that is valid exisiting domain but you have no MX record fot domain.com, so I have a lots ot MAIL-DELIVERY in my mailwue because userdomain.com try to send mail to unexisting user on my system so MAIL_DELIVERY try to send back delivery that user no eist. But because of noexistin MX record it leave in mailqueue.
Tell me what to do?
>
> --
> Dean C. Strik Eindhoven University of Technology
> deanstack.nl | deanipnet6.org | http://www.ipnet6.org/
> "This isn't right. This isn't even wrong." -- Wolfgang Pauli

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