Hi List, I tried to get two sendmails working together but failed. What did I do wrong? Server A (LAN) is a SuSE 8.0 box with sendmail 8.12.3. It collects mail from the LAN without problems and can deliver them to other servers. If it weren't for SPAM-control of other servers... Server B is a SuSE 7.2 root-server with sendmail-tls (latest patches implemented). This box should become my relay for all mails from the LAN. If I send mail from my kmail-program, I can use authentication methods plain and login without problems. Encryption will be the next step. I setup LAN-Server A to relay mail to root-server B (SMARTHOST=...), to use Authentication method PLAIN (SMTP_AUTH_MECHANISMS="PLAIN") and I edited the auth-info file. I double checked correct spelling of servername, username and password. I let SuSEconfig do the dirty job and restarted the server - all corresponding to the article in the SDB. It simply doesn't work here! Regardless of the authentication method, every try ends up with an "authentication failed". I installed a SuSE 8.1 sendmail also but got the same result. To sum it up: kmail -> sendmail-tls works while sendmail -> sendmail-tls does not! Any hints and tipps greatly appreciated - thank You Roland Hilkenbach