>>>>> "Bill" == Bill Cole <postfixlists-070...@billmail.scconsult.com> writes:

> On 2022-12-04 at 20:57:49 UTC-0500 (Sun, 4 Dec 2022 20:57:49 -0500)

> You are missing the point here.

> NO ONE running a serious mailserver will reject mail based on a 
> UCEPROTECT level 3 listing. It is a waste of your energy to focus on 
> that listing.

I'd like to believe that.

> Your problem is Linode. They have had a steady stream of spamming 
> custromers that they have failed to deal with for extended periods. Some 
> mail systems have responded by rejecting all mail from all machines on 
> Linode networks.

Sure, I can understand that, but I don't like it and I don't really
want to move to another hosting provider at this time, unless people
have a good suggestion?  

And how long before that provider gets completely banned as well?  And
what VPS provider do you recommend?

So right now I'm trying to learn how to write a milter to re-write
email sent via a specific transport.  So I have setup my transport
like this:

  # Added to deliver mail to charter.net, 20221202
  charter       unix  -       -       y       -       -       smtp
          -o smtp_tls_wrappermode=yes
          -o smtp_tls_security_level=encrypt
          -o smtp_generic_maps=hash:/etc/postfix/sender_charter
          -o header_checks=pcre:/etc/postfix/charter_header_first
          -o smtp_header_checks=pcre:/etc/postfix/charter_header_second
          -o myorigin=charter.net


And I have it properly trying to send the emails, but I get bounced
with:

  <jstof...@charter.net>: host mobile.charter.net[47.43.18.12] said:
  550 5.1.0 <j...@stoffel.org> sender rejected (in reply to MAIL FROM
  command)

so I think I need a milter to re-write my From: header on my outgoing
emails to be jstof...@charter.net.

Should be simple, but how to tie it in isn't quite clearcut to me
yet.  

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