On Tue, Apr 24, 2012 at 3:07 PM, Frank Elsner <[email protected]> wrote: > > Hi colleagues, > just curious: > > Why is this not a fatal error resulting in a non-delivery report: > > 2012-04-24 17:21:03 1SMhY5-0004Nn-Vg == [email protected] R=via_egypt > T=smtp defer (-42): authentication required but authentication attempt(s) > failed
Is it possible that the remote server returned 4xx codes in response to the authentication requests? I'm imagining the difference between the server saying "4xx, I can't talk to my back end user database right now" and "5xx, That's not a valid username/password combo" --John -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
