telnet hangs on the sasl2 part

[Alexander Dalloz]

Am 02.06.2017 um 08:31 schrieb Roelof Wobben:
> pwcheck_method = auxprop
> auxprop_plugin = sasldb2
> mech_list = plain login cram-md5 digest-md5 ntlm

That's wrong syntax. That mistake creates the very same Postfix error 
log messages for me too testing your issue.

Correct it to:

pwcheck_method: auxprop
auxprop_plugin: sasldb2
mech_list: plain login cram-md5 digest-md5 ntlm

Alexander