Op 08-02-2024 om 04:09 schreef Peter via Postfix-users:
My recommendations are as follows (other people's recommendations
will vary):
1. Don't forward mail.
2. If you must forward mail then relay it using a different IP
address to mail that originates from you, that way if the IP gets
added to a DNSRBL it at least should hopefully not affect the mail
that you originate.
3. SPAM-filter mail before you forward it, be aggressive with this
as you really don't want to be forwarding SPAM. Note that some SPAM
will still get through.
4. ARC sign your forwarded mail.
5. Use SRS on forwarded mail.
This is in addition to all the other things you do for mail that you
originate (SPF, DKIM, DMARC, etc).
On 08.02.24 09:38, Kees van Vloten via Postfix-users wrote:
A little addition that also helps a bit: move the content of the From:
header to the Reply-To: header and replace From: with the local
account that is forwarding the message. All mail then originates from
your domain and a reply to a forwarded message will go to the original
sender.
This requires mechanism to prevent any error messages from being forwarded.
Simple forwarding usually forwards all messages sent to a mailbot, but if
you forward to an address that has a problem which results error mail, you
don't want to forward that error mail to the same address again.
Especially if that error looks like "gmail has decided your mail is spam"
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Windows found: (R)emove, (E)rase, (D)elete
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