I am maintaining the DNS records of a domain which was set up by someone else.
I have following RRs (visible in an webinterface):
example.com A 1.2.3.4
example.com MX 10:mail.example.com
example.com TXT "v=spf1 mx ip4:1.2.3.4 -all"
mail.example.com A 1.2.3.4
mail.example.com TXT "v=spf1 include:example.com"
Is it correct that I can remove the SPF TXT record of mail.example.com ? As far as I know, it is not necessary. (Assuming that eMails are sent from [email protected] , and never from [email protected] )