>> if BOFHCHECKHELO really does what it's documented to do, and what >> indicates this message, then you should not use it, since it violates RFC >> 821 and all its successors. It may cause troubles to you (well, it just >> did...)
On 28.11.14 22:09, Marcin 'Rambo' Roguski wrote: >Actually, it also slashed about 30% of incoming spam, and I didn't notice any >illogical behaviour of my courier when analyzing the logs. I noted that it is an RFC violation: you MUST NOT refuse connection because HELO string does not match reverse DNS. such a thing may happen in case of IP or DNS change, even for hammy senders. ...you may reject the connection because of different HELO issue. > This gem is just one >of hundreds hosts that connect to my server every day, and they don't have >issues >(unless, of course, they do, but 99.9% of these are either dynamic IPs or shady >mailing servers). don't you run other checks that refuse those spammers? >I sumbit to you: > >$ host mx1.evo.pl >mx1.evo.pl A 178.63.45.155 > >However, I'm being reached by 178.63.50.70, thus HELO is mismatched, >which suits my aggressive antispam policy - mail is rejected. usually, it does not only matter hof much of spam gets rejected, but also how much of ham is rejected. It's not wise to violate the RFC standard, if you want to use it for communication. -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. I don't have lysdexia. The Dog wouldn't allow that. ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
