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. Regards, King 2013/8/23 DTNX Postmaster <postmas...@dtnx.net> > On Aug 23, 2013, at 07:54, Grant <emailgr...@gmail.com> wrote: > > > Does this mean the email address doesn't exist? > > > > <exam...@aol.com>: host mailin-04.mx.aol.com[64.12.138.161] said: 550 > 5.1.1 > > <exam...@aol.com>: Recipient address rejected: aol.com (in reply to > > RCPT TO command) > > > Yes, it should mean exactly that; > http://tools.ietf.org/html/rfc3463#section-3.2 > > X.1.1 Bad destination mailbox address > > The mailbox specified in the address does not exist. For > Internet mail names, this means the address portion to the left > of the "@" sign is invalid. This code is only useful for > permanent failures. > > Mvg, > Joni > >
