How do I determine what version of TLS my UTM is using when sending email?

'TLS Settings' on the 'Advanced' tab of 'SMTP'.  Is that what you were looking for, Steve?

Note that selecting TLSv1.2 doesn't guarantee that it will be used unless you specify that it must in the configuration options following that.  The Proxy will start with 1.2 and will fall back to 1.1, 1.0 and no TLS in sequence if the other MTA doesn't support the higher level.

To see how many were sent using the various versions of TLS this year:

secure:/home # zgrep  'exim-out' /var/log/smtp/2019/*/*|grep 'R=dnslookup'|grep -oP 'TLS.*?\:'|sort -n|uniq -c
      6 TLSv1:
    444 TLSv1.2:

Cheers - Bob

'TLS Settings' on the 'Advanced' tab of 'SMTP'.  Is that what you were looking for, Steve?

Note that selecting TLSv1.2 doesn't guarantee that it will be used unless you specify that it must in the configuration options following that.  The Proxy will start with 1.2 and will fall back to 1.1, 1.0 and no TLS in sequence if the other MTA doesn't support the higher level.

To see how many were sent using the various versions of TLS this year:

secure:/home # zgrep  'exim-out' /var/log/smtp/2019/*/*|grep 'R=dnslookup'|grep -oP 'TLS.*?\:'|sort -n|uniq -c
      6 TLSv1:
    444 TLSv1.2:

Cheers - Bob