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Re: SMART_HOST to port 465 or 587?

From John Levine <johnl@taugh.com>
Newsgroups comp.mail.sendmail
Subject Re: SMART_HOST to port 465 or 587?
Date 2026-04-13 19:28 +0000
Organization Taughannock Networks
Message-ID <10rjg51$2kmm$1@gal.iecc.com> (permalink)
References <10rjcjs$23i1$1@gal.iecc.com> <10rjcuh$3h4e3$1@dont-email.me>

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According to Kalevi Kolttonen <kalevi@kolttonen.fi>:
>I am not sure which one of these you need. I have set both
>and my Sendmail connects to smart host's TCP port 587.
>
>define(`ESMTP_MAILER_ARGS', `TCP $h 587')dnl
>define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl
>
>Sendmail will use STARTTLS automatically as long as
>your receiving server advertises to support it.

Thanks, that should do it.  Just out of curiosity is
there a way to tell it to do immediate TLS on port 465?

-- 
Regards,
John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly

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Thread

SMART_HOST to port 465 or 587? John Levine <johnl@taugh.com> - 2026-04-13 18:28 +0000
  Re: SMART_HOST to port 465 or 587? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-13 18:33 +0000
    Re: SMART_HOST to port 465 or 587? John Levine <johnl@taugh.com> - 2026-04-13 19:28 +0000
      Re: SMART_HOST to port 465 or 587? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-13 20:18 +0000
        Re: SMART_HOST to port 465 or 587? John Levine <johnl@taugh.com> - 2026-04-13 21:14 +0000
          Re: SMART_HOST to port 465 or 587? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-13 21:39 +0000
          Re: SMART_HOST to port 465 or 587? Hugo Villeneuve-Lapointe <hugo_villap@email.invalid> - 2026-04-13 18:11 -0400
            Re: SMART_HOST to port 465 or 587? John Levine <johnl@taugh.com> - 2026-04-14 00:15 +0000
              Re: SMART_HOST to port 465 or 587? Hugo Villeneuve-Lapointe <hugo_villap@email.invalid> - 2026-04-13 23:27 -0400
                Re: SMART_HOST to port 465 or 587? Claus Aßmann <INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please)@esmtp.org> - 2026-04-14 02:20 -0400
                Re: SMART_HOST to port 465 or 587? Hugo Villeneuve-Lapointe <hugo_villap@email.invalid> - 2026-04-14 22:24 -0400
                Re: SMART_HOST to port 465 or 587? Bjørn Mork <bjorn@mork.no> - 2026-04-14 08:26 +0200
                Re: SMART_HOST to port 465 or 587? John Levine <johnl@taugh.com> - 2026-04-14 18:27 +0000
  Re: SMART_HOST to port 465 or 587? Andrzej Adam Filip <anfi@onet.eu> - 2026-04-13 21:00 +0200

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