After some more try and error I reached a point where I get the following error messages from postfix/smtpd: Jan 20 04:22:56 szse postfix/smtpd[3948]: sql auxprop plugin using mysql engine -> I think that's when postfix restarts smtpd. And later: Jan 20 10:38:47 szse postfix/smtpd[4305]: sql plugin Parse the username mail@xxxxxxxxxx Jan 20 10:38:47 szse postfix/smtpd[4305]: sql plugin try and connect to a host Jan 20 10:38:47 szse postfix/smtpd[4305]: sql plugin trying to open db 'mail' on host '127.0.0.1' Jan 20 10:38:47 szse postfix/smtpd[4305]: sql plugin could not connect to host 127.0.0.1 Jan 20 10:38:47 szse postfix/smtpd[4305]: sql plugin couldn't connect to any host Maybe somebody can figure out from that messages, what I can do to solve my problem. Probably the other messages Jan 20 10:38:47 szse postfix/smtpd[4305]: warning: pD95F4F9B.dip.t-dialin.net[217.95.79.155]: SASL LOGIN authentication failed Jan 20 10:38:47 szse postfix/smtpd[4305]: > pD95F4F9B.dip.t-dialin.net[217.95.79.155]: 535 Error: authentication failed are the consequence. -- Herbert
