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  • From: "Janky Jay, III" <address@concealed>
  • To: "address@concealed" <address@concealed>
  • Subject: Re: [en@sympa] Using Port 587 instead of 25 for Postfix under RHEL
  • Date: Sat, 08 Jun 2024 05:03:52 +0000

Hi Chris,

Port 587 should be a Postfix setting (submissions,) not a Sympa setting. This will limit receiving email from external servers, though, as most use SMTP(S) (port 25) for delivery. I'd suggest using SMTP(S) on ports 25 (via STARTTLS) alongside submissions (587) for the most acceptable configuration.

That being said, maybe I'm misunderstanding your question? Are you looking for something else more specific to Sympa? Like, restricting Sympa to only deliver via submissions? (Sympa will never receive anything from the submissions port as it would be handed off to the LDA or LMTP.)

Regards,
Janky Jay, III


On June 7, 2024 10:01:30 PM UTC, Chris Kay <address@concealed> wrote:

New admin installing Sympa for the first time. I have everything installed, but I’m having a heck of time trying to set up Sympa to use send/receive over 587 only, and my research has found conflicting suggestions.

 

Can someone share how they accomplished this please?

 

Thanks and TGIF!




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