Graeme Fowler pisze: >> Could this work? Pros? Cons? >> > > Forwarding services, of which there are literally hundreds of thousands, > will be broken since the envelope-from will differ from the incoming > hostname (however you work it out). > True - but there's exactly the same is a problem with SPF. Yet, SPF gets deployed.
> Domestic users - millions of them - with their own domain but forced via > there ISP's outbound mailers for policy reasons (which is after all a > good thing) will fall foul of it. This category doesn't just cover > domestic users, it covers people who use email clients at work for their > own domains bu have to use their employer's outbound SMTP server too. > Hm, didn't think of this one, that's a hard cookie. > Servers with no rDNS or invalid or incorrect rDNS (through no fault of > the user since the providers are usually in control - allegedly - of the > PTR zones for their ranges) will fall foul of it. > That's actually a good thing - nowadays users of a few mail servers I manage would not be able to send mail to half of their correspondents if revdns was lacking there. *something/someone* should get them to clean up their act, because their mess is where spammers hide. > If you have a problem with your DNS server, or a network problem makes > your resolver unable to do lookups to certain parts of the internet, > you'll start rejecting messages. > > It's almost like SPF :) > Yep. -- Marcin Krol -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
