521 5.2.1 : AOL will not accept delivery of this message
When sending to some AOL users I notice I am getting bounce error like:
said: 521 5.2.1 : AOL
will not accept delivery of this message. (in reply to end of DATA command)
Any ideas what issue is?
We currently have an open case with AOL on this issue and expect it will be resolved soon. Until then you could ask the recipients to add your email to the safe senders list.