One of our people here at work had some issues with his email on Friday afternoon -- tried sending emails in Microsoft Outlook 2003 to specific clients, but got bouncebacks from "System Administrator" with errors like "550 Authentication turned on in your email client" and "503 No recipient(s)"

The weird thing is that 1) from what I can tell these addresses were used before without issue, 2) no one else has had this problem, 3) I can't view the message headers for some reason, 4) the bouncebacks aren't formatted like a typical mail server rejection message (I use mellocj's service and have had emails kicked before), and 5) there's no copy of the rejection message on the server itself.

I've found a bunch of chatter through Google but nothing useful. Any ideas on wtf is going on? I'm inclined to migrate everyone to Thunderbird... 

5/22/2006 9:12:04 AM

Any patches applied recently or software installed on that machine?

On a first (and poor) guess, sounds like some screwy issue with SSL settings.

5/22/2006 9:24:51 AM

it's a trick question. Outlook can't do anything on its own.

5/22/2006 4:31:07 PM

you can get errors like no recipients were able to send this message blah blah from Outlook before it ever gets to Exchange. It can happen if you have multiple accounts such as one is a MAPI profile and another is an SMTP/POP account and the email you send can't support one of those methods usually....

Those errors don't provide SMTP error codes though because its not an SMTP error so not sure on the 550 or 503 those sound like SMTP errors.

No message header means its internal, has not gotten to SMTP.

Those are my thoughts.

5/22/2006 11:34:53 PM

Thanks for the help everybody! With confirmation the server wasn't the problem, I just moved the important people over to Thunderbird

5/25/2006 11:39:27 AM

it happens sometimes if there's a problem with your address book - might wanna check that out before making them switch email clients for good

5/25/2006 4:45:49 PM