>>>> It depends on MTA. From the log, AOL may not use Postifx or customized the >>>> checking on RCPT_TO stage (PolicyD or milter, etc). >>>> >>>> However, the result is that AOL MTA don't accept it for your MAIL FROM, >>>> RCPT TO parameters. >>> >>> http://postmaster.aol.com/Postmaster.Errors.php >>> >>> The AOL MTA rejects it because the mailbox does not exist. A policy >>> rejection results in a different return code. >> >> I originally started this thread because I received several "Recipient >> address rejected" bounces from different aol.com addresses in the last >> 24 hours. I have just now received this: >> >> Final-Recipient: rfc822;mas...@aol.com >> Action: delayed >> Status: 4.0.0 (temporary failure) >> Diagnostic-Code: smtp; 4.3.2 - Not accepting messages at this time >> 554-'5.7.1 : (RLY:B1) >> http://postmaster.info.aol.com/errors/554rlyb1.html' (delivery >> attempts: 0) >> >> That URL says the following which does sound like a policy violation: >> >> "This error message is a dynamic block on our system. Dynamic blocks >> are placed on an IP address when the IP's statistics break our >> threshold. These are automated blocks that are removed by the system >> within 24 hours once the complaints are again below the threshold." >> >> Could "statistics" refer to the several messages sent from my IP >> address to non-existent aol.com addresses within the last 24 hours? > > Yes. It looks like you sent too many messages to non-existent > mailboxes, and are therefore blacklisted for 24 hours after you stop > doing that. Or at least being deferred. > > You aren't lishwashing or anything, are you? Can't imagine they'd do > that for just a few of them.
No way. I don't think I've seen more than a few bounces within the last day or two. Maybe it's too high of a percentage good mail to bad mail? I need to start disabling an email address when I get a bounce from it. - Grant
