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Re: [Bug-mailfromd] things with rejecting in 'prog connect'

To: "Marc" <Marc@xxxxxxxxxxxxxxxxx>
Subject: Re: [Bug-mailfromd] things with rejecting in 'prog connect'
From: "Sergey Poznyakoff" <gray@xxxxxxxxxx>
Date: Fri, 22 Sep 2023 22:05:14 +0200
Cc: "bug-mailfromd@xxxxxxxxxx" <bug-mailfromd@xxxxxxxxxx>
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In-reply-to: Your message of Sat, 16 Sep 2023 09:05:00 +0000 <8d4ce80f95d54f48be005599d18a984f@f1-outsourcing.eu>
References: <8d4ce80f95d54f48be005599d18a984f@f1-outsourcing.eu>
User-agent: MH (GNU Mailutils 3.15)

Hi Marc,

> 1. why, if I do the reject in "prog connect", sendmail is still continuing with STARTTLS?

This is described in detail in section 4.11 "Handlers" of the Mailfromd
Manual, in the description of the connect handler.  You can find it
online here:

  https://www.gnu.org.ua/software/mailfromd/manual/Handlers.html

To make the long story short: Sendmail acts in accordance with the RFC.
  
> 2. It looks like this matching is not working sometimes.

CIDR matching is deterministic: it cannot work from time to time.  What
*can* change from time to time are input data that match_dnsbl function
gets.  Since these data come from DNS, various factors, such as caching,
TTLs etc. can affect your results.

Regards,
Sergey

References:
- [Bug-mailfromd] things with rejecting in 'prog connect'
  - From: Marc

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