authentication problem on port 587

[Thomas Spuhler]

I have the following problem:

I cannot sent e-mails on port 587
nmap localhost shows it is open
open 587 submission

But roundcubemail reports a server error
Thunderbird keeps asking for the password.
I have no problem to send e-mails with the sane settings, but on port 25.

I may be missing a package or it could be a problem of the distrbution.

Any hint would be apreciated.

-- 
Best regards
Thomas Spuhler
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