Mail Server Setup

Lonnie Olson lists at
Tue Jun 3 12:57:29 MDT 2014

On Jun 3, 2014, at 11:27 AM, Brian J. Rogers <captbrogers at> wrote:

>> Additionally, I recommend enabling opportunistic SSL on both inbound
>> and outbound SMTP connections over port 25.  This will encrypt even
>> more SMTP traffic when possible, and is the good neighbor thing to do.
> Is this (for Postfix) smtpd_tls_security_level = may ? Because I couldn't
> find exactly what to put but this one seemed to be opportunistic SSL/TLS.

Close.  Outbound connections use smtp_tls_security_level = may

But leave that one in there too, it enables opportunistic SSL on inbound connections.


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