On Sun, Apr 25, 2010 at 09:35:37AM -0700, mohamad rahimi wrote: > "Unable to authentication to SMTP server mx.mydomain. The server does not > support any compatible secure authentication mechanism but you have chosen > secure authentication. Try switching off secure authentication."
"Secure Authentication" means no plaintext passwords, i.e. GSSAPI, CRAM-MD5, ... Are you sure you have support for mechanisms other than "PLAIN"? If not, don't tell Thunderbird to try and use them... -- Viktor. P.S. Morgan Stanley is looking for a New York City based, Senior Unix system/email administrator to architect and sustain our perimeter email environment. If you are interested, please drop me a note.