I am on 15.2 and have ONE user in a domain getting 550 OUTGOING SMTP NOT ALLOWED when sending through webmail. Only local email goes through.
I have edited the user and changed the status from ENABLED to DISABLED and back to ENABLED (saving after each change). No effect
I have edited the user and DISABLED OUTGOING SMTP on the SERVICE ACCESS tab. Save, Re-enable, Save again. No effect.
We did nothing recently to the server. no upgrades or anything. She just suddenly cannot send email. Other users on same domain are fine.
She can also receive just fine.
Checked under SECURITY and can't seem to find any kind of block by email address.
Can anyone help?