Migration Updates

  • New error code for invalid mailboxes/user unknown:
ERROR [state=rcpt_to, code=550, text= 5.1.1 <invaliduser@aol.com>: Recipient address rejected: aol.com

[edited]
The actual error code is
500 5.1.1 <sdfklsdksdfdfd@aol.com>: Recipient address rejected: aol.com


Senders using scripts to remove unknown users automatically should be looking for both the new error code and the old one.

The Postmaster site will be updated with new SMTP error codes as quickly as possible.
  • Still migrating, and the MTA timeouts continue, but mail should go through on re-try. If this is not the case please contact us and let us know. Please include some log lines so that we can troubleshoot. A manual SMTP session would also be invaluable.
  • Some feedback loop recipients may find they have malformed ARF. We are aware of the problem and are working on a fix.



-Annalivia Ford
Senior Technical Account Manager
AOL Postmaster Team

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