On Fri, Oct 23, 2020 at 10:28:28AM +0300, Otto J. Makela via mailop wrote:
> 
> SPF for aka.fi is, as far as I can tell, correct albeit non-restrictive.
> Before I start randomly making changes (like adding DKIM etc), does anyone
> have ideas?

I would guess it's the "?all" part they don't like. That basically says,

"the preceding info is correct but we think you should accept mail claiming to 
be
from us regardless of what host tries to deliver" 

Then again, you *did* get an error message back. Unfortunately MSFT has a
history of having mail silently disappear. It's somewhat encouraging if they
have finally stopped doing that.

All the best,
Peter
-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.
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