Jeff Lacki:
> >> I get 'fatal: no SASL authentication mechanisms' in maillog
> 
> >> smtpd_tls_auth_only = yes
> 
> > Do you know what this parameter setting does?
> 
> Not exactly, Ive been reading all kinds of docs and since
> Im new to some of it, Im a little confused between
> SASL and TLS.  I've used postfix for a while but never
> dove into the encrypted aspects of things for security.
> Now Im trying to get secure.
> 
> I was reading http://www.postfix.org/SASL_README.html
> 
> to get SASL+TLS (hopefully) setup to allow specific
> users to relay through my server securely, but maybe
> Im completely going down the wrong path?
> 
> I appreciate the help.

Instead of random websites, you may want to take a look at the
much updated and expanded SASL_README file.

http://www.postfix.org/SASL_README.html

        Wietse

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