On 20201008, at 09:14, Markus Wild swinog-list@dudes.ch wrote:
My take on your problem is the following:
- SPF is bad and breaks mail delivery, don't use it. But, if someone defines SPF records, and they thus declare they
want to shoot themselves into their feet, by all means, I encourage to block mails failing SPF, because that's what domain owners who define SPF records ask for.
As one of the original people involved in SPF and having been doing this anti-spam dance for some time....
SPF is only a part of a solution to the battle of spam.
It helps a lot to combat broken setups.
If a setup is broken, they are not worthy of receiving mail in the first place.
Thus, if you hate on SPF, I can only conclude you have shot yourself in the foot a lot with it.
As you note though, your server, your problem on how one it is configured.
If you need help in resolving your problems, don't hesitate to ask me directly or here on list so that others can also benefit.
Greets, Jeroen
(Running the full stack of SPF/DKIM/DMARC,MTA-STS, etc etc and not having mail delivery issues... ;)