Sign up ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Where is my servers IP. What is this for IP6? "v=spf1 ip4: a mx ~all"

share|improve this question

1 Answer 1

This is an SPF DNS TXT record saying that the IP in the domain's A record, MX record and the IP are permitted to send email for that domain, and that messages from all other servers should be soft-rejected (~all instead of -all). For IPv6, it would be, for example, ip6:ABCD::1234/128 to allow messages from ABDC::1234. You can see the SPF record syntax reference for more information.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.