[Mailman-Users] emails from mailman rejected with error "reject=550 Relaying denied. IP name possibly forged"

Peter Shute pshute at nuw.org.au
Mon Jul 28 00:01:14 CEST 2014

Abdullah AL-Maskari wrote:

> 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 built.
> 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.

Because different recipient servers respond differently to wrongly configured DNS, it might just be coincidence that the other list isn't having the same trouble. It might also be that it is having the same trouble, but with far less recipients.

Peter Shute

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