Change the 550 "Unknown User" message

[tahir]

Hello,

I want to set the bounce errors to a custom message. So, I enter the Catch-All adress like below.
:fail: "No mailbox here"
But, smtp server still returns the bounce message as
550 "Unknown User"
when the receipent is undefined.
How can I change this bounce message?

[jlasman]

I think that's hard coded in exim.

The :fail: isn't going to change that.

Jeff

[tahir]

It should be configurable, I suppose.

Because, on my other site running exim, I can modify that message.
The hosting software there writes the string
"*: :fail: thebouncemessage"
at the end of valiases file and smtp engine returns that message.

Thank You,
Regards.

[jlasman]

It may be configurable in exim.conf; find Unknown User and change it to something else, and do some testing.

Jeff