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  • implicit tls over port 465

    From Andreas S. Kerber@21:1/5 to All on Wed Mar 31 14:51:30 2021
    I was surprised to find out today, that using port 465 is no longer
    deprecated, but is now actually even being encouraged/recommended
    since 2018 (RFC 8314).

    That seems to explain why Thunderbird is using implicit tls over
    port 465 as default. Since that is often causing support issues,
    I was thinking about enabling port 465 and telling sendmail to
    use implicit tls as a DaemonOptions flag. I couldn't find such
    a flag though. Should there be a way to enable implicit tls in sendmail?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Claus =?iso-8859-1?Q?A=DFmann?= @21:1/5 to Andreas S. Kerber on Wed Mar 31 16:42:47 2021
    Andreas S. Kerber wrote:

    I was thinking about enabling port 465 and telling sendmail to
    use implicit tls as a DaemonOptions flag. I couldn't find such
    a flag though. Should there be a way to enable implicit tls in sendmail?

    DaemonPortOptions=options
    ...
    Modifier Options (flags) for the daemon
    ...
    Modifier can be a sequence (without any
    delimiters) of the following characters:

    ...
    s Run smtps (SMTP over SSL) instead of smtp


    --
    Note: please read the netiquette before posting. I will almost never
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    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Andreas S. Kerber@21:1/5 to @esmtp.org on Wed Mar 31 17:33:05 2021
    Claus <ml+sendmail(-no-copies-please)@esmtp.org> wrote:
    I was thinking about enabling port 465 and telling sendmail to
    use implicit tls as a DaemonOptions flag. I couldn't find such
    a flag though. Should there be a way to enable implicit tls in sendmail?

    DaemonPortOptions=options
    Modifier Options (flags) for the daemon
    s Run smtps (SMTP over SSL) instead of smtp

    Thanks Claus! Works like a charm :-)
    Just found it in op.me/op.ps. Sorry about that.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)