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| From | Hugo Villeneuve-Lapointe <hugo_villap@email.invalid> |
|---|---|
| Newsgroups | comp.mail.sendmail |
| Subject | Re: SMART_HOST to port 465 or 587? |
| Date | 2026-04-13 23:27 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <lpo0bm-8oj.ln1@EINTR.net> (permalink) |
| References | <10rjcjs$23i1$1@gal.iecc.com> <10rjj1u$3j7e1$1@dont-email.me> <10rjmbc$lpm$1@gal.iecc.com> <2960bm-08v2.ln1@EINTR.net> <10rk0ua$2o7t$1@gal.iecc.com> |
John Levine <johnl@taugh.com> wrote: > According to Hugo Villeneuve-Lapointe <hugo_villap@email.invalid>: >>John Levine <johnl@taugh.com> wrote: >>> It appears that Kalevi Kolttonen <kalevi@kolttonen.fi> said: >>>>John Levine <johnl@taugh.com> wrote: >>>>> Thanks, that should do it. Just out of curiosity is >>>>> there a way to tell it to do immediate TLS on port 465? >>>> >>>>I have no idea as I have never used port 465. I suppose >>>>it is deprecated anyway, but I am not 100% sure. >>> >>> It's not deprecated at all. Every MTA I know supports it. Even sendmail. >> >>How does sendmail supports it? >> >>I know there is Flag=s in DaemonPortOptions to open a port and offer >>SMTP over SSL. > > That's it. Ports 465 and 587 are for submission, from an MUA to an MSA. > > In my application the old server is the submission cient and the new server > is the submission server. I'm afraid I don't think it is possible to do SMTP over SSL (port 465) between 2 sendmail servers (or I don't know how to do that). Why everyone mentions doing it over port 587 with STARTTLS. STARTTLS should be used automaticaly but if you want to enforce it: if you have FEATURE(`access_db') you can add to /etc/mail/access (and recompile after): # Sending to a mail server TLS_Srv:relay.server.domain.name TEMP+ENCR:112 TLS_Srv:relay.server.ip TEMP+ENCR:112 # Sending to recipient email # first match order: user@domain, user@, domain, '' TLS_Rcpt:domain.name TEMP+ENCR:112 # or the dangerous never send an un-encrypted email again #TLS_Rcpt: TEMP+ENCR:112 See the STARTTLS section in cf/README for details (it should be provided in your sendmail package) or: https://fossies.org/linux/misc/sendmail.8.18.2.tar.gz/sendmail-8.18.2/cf/README?m=t -- Hugo Villeneuve-Lapointe
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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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