I have one user who now cannot Email any AOL addresses he gets this error. I can email the same AOL addresses from the company's administrator account so it seems like its just for this one user. I verified with out Spam filter the message is getting blocked on the AOL side. I can't seem to find any way of contacting AOL unless you're a paying AOL subscriber. I can't think of any way of contacting them is there another way to address a problem like this.
did not reach the following recipient(s):
There was a SMTP communication problem with the recipient's email server. Please verify the e-mail address to which you sent the message is correct. Otherwise, contact your system administrator.
Response from destination mail server:
521 5.2.1 : AOL will not accept delivery of this message.