mohamad rahimi: >In our group we are using suse and Postfix SMTP server. Every thing >was fine until last month when we restart our mail server and also >firewall. The first problem is that when we use Thunderbird with >security and Authentication it is impossible to send a email. we >receive this error ?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?. however , it is possible >to send email without Authentication in local network. The second >problem is that we can not send email via Thunderbird from outside >of our local network. The error is ?Mail server responded 5.7.1 >< x...@y.com> relay access denied. Please check the message recipient >x...@y.com and try again?. we also have web mail (Squirrelmail) and >it works without any problems everywhere. I completely confuse >without change anything these problem happen. I was wondering if >someone could help me.
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