550: Service denied due to user supplied exit.

Explanation

This reply message is sent to the partner SMTP application if the user-supplied exit rejects either an SMTP command, or a piece of mail, or both.

System action

Processing continues.

User response

None.

System programmer response

Look at the user supplied exit to determine the cause of the rejection and take any necessary action.

Module

Various in SMTP

Destination

Various

Parent topic: SMTP reply code messages