Hi, Alexander Dalloz wrote: >>> 2) saslpasswd2 -c -a mail -u mail testuser >>> >> That's a typo - the user is testomat. >> But, with the same result. :-( >> >>> 3) testsaslauthd -u testomat -p <mypassword> -s smtp -r mail >>> shell output of testsaslauthd: >>> 0: NO "authentication failed" > > You are mixing things. saslauthd and sasldb are exclusive: either use one > or the other (at least on CentOS). ok - I think we're coming closer to the point. It will certainly be sasldb2, because I have an old machine with SMTP AUTH users who are contained in /etc/sasldb2 I want to transfer these users to the new machine without having them to assign new passwords. Given the scenario that I copy the old /etc/sasldb2 to the new machine, how could postfix there authenticate these SMTP AUTH users? > On CentOS sasldb can only be used as a plugin by auxprop mechanism. You > will have to decided for one way to store your credentials. see above - the decision is already taken by the fact of the migration. Regards Michael