[BlueOnyx:24516] Re: Postfix config

[Ernie]

Very true,
with a huge legacy pool of users, you forfiet the added benefit of of host
checks, and have to use some other technique to reduce the spam load.

- Ernie.



[ Charset ISO-8859-1 converted... ]
> Hello Ernie,
> 
> not practicable in real life.
> You can't expect hundreds or thousands of mail users to take 587 if their
> mail client specifies 25. 
> I don't want to have this support hassle.
> As an option for manual setting. Fine by me. But not by default. This is too
> massive an intervention in the behaviour of the users.
> 
> Best regards,
> Dirk
> 
> blackpoint GmbH – Friedberger Straße 106b – 61118 Bad Vilbel 
> 
>  
> -----Ursprüngliche Nachricht-----
> Von: Blueonyx <blueonyx-bounces at mail.blueonyx.it> Im Auftrag von Ernie
> Gesendet: Freitag, 13. November 2020 21:37
> An: BlueOnyx General Mailing List <blueonyx at mail.blueonyx.it>
> Betreff: [BlueOnyx:24512] Re: Postfix config
> 
> One thing I should point out for those people having trouble with helo and
> fqdn checks in postfix.
> 
> They should only be used on port 25 ie when talking MTA to MTA
> 
> Clients should be using the submission port 587 to connect to the BX server,
> and that port should not have any helo checks, or fqdn checks enabled
> because they have already passed authentication.
> 
> 
> - Ernie.
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