nanog mailing list archives
Re: Why do so few mail providers support Port 587?
From: Valdis.Kletnieks () vt edu
Date: Wed, 16 Feb 2005 12:18:19 -0500
On Wed, 16 Feb 2005 01:46:09 PST, Owen DeLong said:
--==========04787AC3A7FDFBF67AA5========== Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Um, you actually have to work somewhat to get sendmail to support unauthenticated submission on port 587. The default configuration is that port 25 is unauthenticated (albeit with some restrictions on relaying (only for local clients)) and port 587 is authenticated. As such, I'm not sure why you seem to think that sendmail on port 587 is unauthenticated.
Umm.. because the Sendmail 8.13.3 tree has this: (from cf/README): ---- If DAEMON_OPTIONS is not used, then the default is DAEMON_OPTIONS(`Port=smtp, Name=MTA') DAEMON_OPTIONS(`Port=587, Name=MSA, M=E') ---- from doc/op/op.me: That is, one way to specify a message submission agent (MSA) that always requires authentication is: .(b O DaemonPortOptions=Name=MSA, Port=587, M=Ea .)b Hmm.. no default 'a' to require authentication by default. That would probably explain why you actually have to work to set it up.
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Current thread:
- Why do so few mail providers support Port 587? Sean Donelan (Feb 15)
- Re: Why do so few mail providers support Port 587? Thor Lancelot Simon (Feb 15)
- Re: Why do so few mail providers support Port 587? Adrian Chadd (Feb 15)
- Re: Why do so few mail providers support Port 587? Thor Lancelot Simon (Feb 15)
- Re: Why do so few mail providers support Port 587? Daniel Golding (Feb 15)
- Re: Why do so few mail providers support Port 587? Jason Frisvold (Feb 15)
- Re: Why do so few mail providers support Port 587? Owen DeLong (Feb 16)
- Re: Why do so few mail providers support Port 587? Valdis . Kletnieks (Feb 16)
- Re: Why do so few mail providers support Port 587? Todd Vierling (Feb 17)
- Re: Why do so few mail providers support Port 587? Owen DeLong (Feb 17)
- Re: Why do so few mail providers support Port 587? Todd Vierling (Feb 19)
- Re: Why do so few mail providers support Port 587? Adrian Chadd (Feb 15)
- Re: Why do so few mail providers support Port 587? Thor Lancelot Simon (Feb 15)
- Re: Why do so few mail providers support Port 587? Thor Lancelot Simon (Feb 15)
- Re: Why do so few mail providers support Port 587? Owen DeLong (Feb 16)
- Re: Why do so few mail providers support Port 587? Daniel Senie (Feb 16)