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Re: MORE 3rd party relay troubles
> Hi Matti,
> Zmailer 2.99.50-s5
> Today I received a notice from ORBS today that our MTA was allowing
> relaying. Gad! - and to be put into the MAPS db - yikes!
> Could auto-anti-spam robots eventually close everything down???
No, that was a bug in IP address literal processing.
It has been fixed in current code.
> or email@example.com
> or even firstname.lastname@example.org
> My only defense until I build a newer ZMailer was to add may own MTA's
> dotted quad in smptserver.conf to disallow it:
> \[18.104.22.168\] 999 !NO EMAIL TRANSACTIONS ALLOWED ON DOTTED QUAD
> Geeze... that stopped it cold - but it's a poor way - I can't be
> aware of the zillions of potential spammers that could try this trick...
> There seems indeed to be a weak point when the sender fakes
> the EHO response to be that of the receiving MTA , and then the policy
> rules fall apart.
Nope, it was the IP-literal processing bug.
> I'm sure hoping that the latest-greatest ZMailer can handle these.
Yes. You need the lattest smtpserver, no need to install
*every* new binary in one go. (But do remember to match
your smtpserver.conf with new PARAMs..)
> James S. MacKinnon Office: P-139 Avadh-Bhatia Physics Lab
> Team Physics Voice : (780) 492-8226 [old AC 403]
> University of Alberta email : Jim.MacKinnon@Phys.UAlberta.CA
> Edmonton, Canada T6G 2N5 WWW : http://www.phys.ualberta.ca/