>>>>> "Kjetil" == Kjetil Torgrim Homme <[EMAIL PROTECTED]> writes:
>>> It is a _NORMAL_ case for the HELO domain to be different to the domain >> "Not uncommon", yes, Dunno if 'Normal' fits so well w/r MTA's. Kjetil> very few properly set up servers will have the domain name as Kjetil> their hostname. can you imagine yahoo.com being an actual Kjetil> host handling e-mail? that would have to be a serious piece Kjetil> of hardware :-) Even if you match loosely on the domain, it's still more the exception than the rule, just a simple grep of our mail logs turned up these common scenarios: - ISPs using @example.com addresses but example.net for infrastructure naming, including the mail server HELOs (matching the DNS), and many variations on this theme - Domains hosted on large outsourcers: CP, Outblaze, Godaddy/Secureserver, Schlund/1&1, etc. (this accounts for many million domains in total) - entire ISPs outsourcing their mail - Mail sent from webmail sites using the user's ISP address as the envelope; and mail sent from ISPs using a webmail address as the envelope - Any sort of forwarding - User uses a personal domain but still sends outgoing mail from their ISP And many cases which aren't obvious from the mail logs what the precise reason is. Kjetil> we only advertise pipelining to hosts where HELO matches the Kjetil> reverse DNS: Hmm, would it also not make sense to exclude generic names there? That might be a bit complex to put in a single string expansion, though. >> BTW - 'supernews.net' ? >> >> Interesting concept, that of charging a subscription fee for >> usenet access. Kjetil> you should try setting up the infrastructure needed for a Kjetil> usenet server with access to alt.binaries.*, it's not trivial Kjetil> either network, disk, CPU or businesswise. I'm not sure what Kjetil> the traffic levels are these days, it was 300 GB per day a Kjetil> couple of years ago. It hit 2.50TB per day (real terabytes, not decimal ones) this past weekend. -- Andrew, Supernews http://www.supernews.com -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
