Thus spake Jay Lee on Fri, Feb 03, 2006 at 01:24:21PM CST > > On Fri, February 3, 2006 2:11 pm, Lindsay Haisley wrote: > > Thus spake Jay Lee on Fri, Feb 03, 2006 at 01:01:46PM CST > > > >> On Fri, February 3, 2006 1:49 pm, Dave Platt wrote: > >> > >>> That trick doesn't seem to work for an smtpfilter, however. If one > >>> tries to echo a 4xx temporary-failure code in an smtpfilter, Courier > >>> prefaces the whole string (including the 4xx) with a 558 code, making > >>> the error permanent rather than temporary. > >>> > >>> I'm not sure why this distinction exists in the code. It'd be nice > >>> to allow an smtpfilter to return a temporary error, too. > >> > >> I believe it's because that's what the SMTP RFCs require. Once the > >> receiving server sends the OK send data acknowledgement it can't return > >> a 4xx temp error. It must either reject the message or accept it for > >> delivery. Yeah, it sucks but that's the way it is... > > > > AOL does it! If your IP happens to be on one of their blacklists and you > > try to email an AOL subscriber, you don't get an error until you've > > completed the data section of your email and then the AOL mail server > > says "421 SERVICE NOT AVAILABLE". > > I'm sorry... Did you really start an argument with the words "AOL does > it!"!? Yes, I have reached the end of the internet... :-) Honestly, I > don't know and I don't have time to dig through the RFCs right now (nor do > I desire the headache I get when read RFCs...) Sam could say better why > 4xx errors aren't possible with .smtpfilter.
To clarify, this is tongue-in-cheek. I _don't_ hold AOL up as a paragon of RFC compliance, in fact - quite the opposite. I'm in the process of having to get an IP un-blocked at AOL on a new server I'm building - an IP address that's been unused for years and which I've just now started trying to use for outgoing email. I've been through their 'whitelist' procedure, but I can't start moving customer services on to the new server until AOL takes some action to unblock the IP address. -- Lindsay Haisley | "Fighting against human | PGP public key FMP Computer Services | creativity is like | available at 512-259-1190 | trying to eradicate | <http://pubkeys.fmp.com> http://www.fmp.com | dandelions" | | (Pamela Jones) | ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
