recipient's destination email system is unknown or invalid.

recipient's destination email system is unknown or invalid.

Post by DB » Fri, 07 Jan 2005 06:41:29


Can anyone tell me what this error message means. I started getting it
with a couple of internal email addresses (within my company) only today.
Everything's been working fine for years.

I only get it when I enter their email addresses from the address book. If
I type them in manually, the get sent out fine.

Thank you.
 
 
 

recipient's destination email system is unknown or invalid.

Post by Lanwench [ » Fri, 07 Jan 2005 13:29:25


Do you have an internal/in-house mail server? What kind?


Where is the address book?


Also, what version/mode/SP level of Outlook?