Re: [mailop] Guide for setting up a mail server ?

2023-07-09 Thread Michael Rathbun via mailop
On 9 Jul 2023 22:07:38 -0400, John Levine via mailop 
wrote:

>In fact it's for people but you never know what some people will do.
>Don't start by letting your chatty user send "here's my new address"
>to all 10,000 people in his address book.

Ah.  Somebody doing that on my server would get an automated but polite notice
that we need to have a discussion of domain policy and expected behavior
before any more email could go out.  Good fences, good neighbors, 

mdr
-- 
   We are all temps.
  -- Daisy Adair

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Re: [mailop] Guide for setting up a mail server ?

2023-07-09 Thread John Levine via mailop
It appears that Michael Rathbun via mailop  said:
>On 9 Jul 2023 18:39:22 -0400, John Levine via mailop 
>wrote:
>
>>= start slow and look at any bounces
>
>This implies to me that this will be a broadcast server rather than mailboxes
>for individuals and businesses.  If so, there are some paragraphs that might
>need to be added, especially about list hygiene.

In fact it's for people but you never know what some people will do.
Don't start by letting your chatty user send "here's my new address"
to all 10,000 people in his address book.

R's,
John
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Re: [mailop] Guide for setting up a mail server ?

2023-07-09 Thread Michael Rathbun via mailop
On 9 Jul 2023 18:39:22 -0400, John Levine via mailop 
wrote:

>= start slow and look at any bounces

This implies to me that this will be a broadcast server rather than mailboxes
for individuals and businesses.  If so, there are some paragraphs that might
need to be added, especially about list hygiene.

mdr
-- 
 "There are no laws here, only agreements."  
-- Masahiko

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[mailop] Guide for setting up a mail server ?

2023-07-09 Thread John Levine via mailop
A friend of mine wants to set up a mail server on a VPS and asked me what
he needs to do beyond the obvious setting up postfix and dovecot.  Is there
a good summary somewhere?

I'm thinking of things like:

- choose a provider that has decent mail behavior, e.g., not Digital Ocean

- make sure the MTA's forward and reverse DNS match

- set up an SPF record, probably "v=spf1 mx ~all"

- set up DKIM signing for each domain you host, make the
DKIM domain match the From: domain

= start slow and look at any bounces

- maybe collect DMARC stats but for a small volume MTA, not very interesting

R's,
John

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