bug-mailfromd
[Bug-mailfromd] proper use of dkim verify
I have this[1] dkim procedure. I have sendgrid and others failing with 'signature did not verify'. At first I thought, that I am the cause of this, when I add a header that this is a spam message. But I already do this also in a early stage with spf "header_add ('Received-SPF" on almost all messages.
these fail with 'signature did not verify':
hotmail.com
fedex.com
u58461.wl212.sendgrid.net
bnc3.mailjet.com
but most like these are just fine:
spmail.uber.com
members.netflix.com
gmail.com
If I add these headers in 'prog envfrom', 'prog envrcpt' etc are these than already used in 'prog eom'? If this is the case, I don't really get why all my messages don't dkim fail, since I am putting the header for spf on almost everything.
If these added headers don't make dkim fail, what else could make this fail? I can't imagine that by now hotmail.com or fedex.com are messing this up.
[1]
https://www.gnu.org.ua/software/mailfromd/manual/DKIM.html