I don't know what the best practices are for creating the spf record.
v=spf1 ip4:12.5.52.36 a:mail.grahamrmc.com -all
My Sophos utm's hostname is vpn.grahamrmc.com with the public ip address 12.5.52.51 and it is needed for the spx portal to work.
The internal fqdn of the exchange server is grmc-mail.noc.grahamrmc.com
Is the "v=spf1 ip4:12.5.52.36 a:mail.grahamrmc.com -all" right according to best practices?
Everything seems to be working ok.
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