SPF Record for Domains on Mailserver

alexp

Hi,
My mailserver uses domain mail.server.com with SPF v=spf1 mx a -all
On the mailserver i have configured multiple domains with the SPF record v=spf1 a _all

Is that still OK? or is it preferrable to use -all for domains or include: domain for all domains ?

TQ for any help or advise
A

esackbauer

https://docs.mailcow.email/getstarted/prerequisite-dns/

Please understand the difference between a mail domain which is done in MX record and a host A record like “mail.server.com”.

Cisco30

https://www.mailhardener.com/blog/why-mailhardener-recommends-spf-softfail-over-fail