I used to be able to use
smtp.comcast.netas my SMTP server (by setting
/etc/exim4/update-exim4.conf.confand running sudo update-exim4.conf), but this is no longer possible. I now have to use the SMTP server specified in for my account in the comcast business site (followed by
::587) along with authentication and TLS encryption (by adding my comcast credentials to
MAIN_TLS_ENABLE = true
/etc/exim4/exim4.conf.localmacros). All this is well and good, and I consider it in an upgrade, but for some reason, Exim4+GnuTLS simply could not get along with comcast's TLS implementation.
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