James Freer wrote:
... while talking to greyhoundhomer.org.uk.:
> RCPT To:sally@greyhoundhomer.org.uk
<<< 550-Callback setup failed while verifying jessejazza@aim.com <<< 550-Called: 64.12.138.120 <<< 550-Sent: initial connection <<< 550-Response: 554- (RTR:CH) <<< 550-554 Connecting IP: 65.98.59.114
The server handling greyhoundhomer.org.uk is performing some tests against your email address. I assume it testing whether or not your address is valid (presumably jessejazza@aim.com is your address?) and so looked up the mail server which handles your email and connected to it, or rather tried to.
That server (belonging to AOL) rejected the connection, and so the assumption was made that your address was invalid and your email not accepted.
For whatever reason (based on http://postmaster.info.aol.com/errors/554rtrch.html confirms) the address in question (that of greyhoundhomer.org.uk) has been blacklisted, perhaps because spam has been sent from that address in the past.
Now the IP address in question (Connecting IP: 65.98.59.114) belongs to FortressITX in the US (according to "whois 65.98.59.114" , so I assume this is some 3rd party email server, not one belonging to greyhoundhomer.org.uk (unless its some cheap US hosting package). According to MXToolbox (www.mxtoolbox.com/blacklists.aspx) the IP is not listed in any of the 120+ blacklists it checks. Therefore it may be that the problem is resolved, unless AOL has its own lists.
To cut a long story short: AOL (and similar free addresses) are not reliable for anything these days; they are heavily targetted by spammers (both for sending from and to), and the varied, changeable, and largely random methods used to stop spam tend to cause at least as many problems as they solve. I would not advise anyone use them for anything!
PS: Also: What Ted said!