[Mailman-Users] emails from mailman rejected with error "reject=550 Relaying denied. IP name possibly forged"
al.maskari at hotmail.com
Sun Jul 27 22:43:35 CEST 2014
thanks for your reply.
I should have probably mentioned that I have another instance of mailman
running on another server on the network and it is not having any
trouble sending mail through mailhost. The sendmail files I am using for
my mailman installation have been copied from the other server as the
whole idea is to migrate from the currently working server to the one I
I will look at the spam filter configurations and my DNS but I dont see
how any of those systems could be broken if the original mailman server
is working fine.
On 27/07/2014 00:54, Stephen J. Turnbull wrote:
> Abdullah Maskari writes:
> > Jul 24 09:09:16 mailhost sm-mta: s6O89FAL003309:
> > ruleset=check_rcpt, arg1=<target-address at external.domain2.com>,
> > relay=mailhost.server.in-dmz.on.internal-domain.com [mailhost ip
> > address] (may be forged), reject=550 5.7.1
> > <target-address at external.domain2.com>... Relaying denied. IP name
> > possibly forged [mailhost ip address]
> Looks to me like your DNS is quite broken (the references to IP
> addresses being forged). Many destination hosts will filter such
> The enhanced status code is 5.7.1, an administrative reject. You've
> violated somebody's spam-filtering policy, and they're not accepting
> mail from you. You might want to check if your IP address(es) are on
> a blackhole list.
> However, I think the immediate priority is fixing your DNS so that
> your external mail server is the MX for your domain, which has a
> proper A and/or AAAA address (ie, the domain name advertised is not a
> CNAME), and has PTR record from the MX name to the server's IP.
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