Am I writing the SPF record correctly?

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Schoolboy.2016-06-17 12:43:38

SPF

Schoolboy., 2016-06-17 12:43:38

Did I specify the SPF correctly, I would like to know if ip6 will be useful?

"v=spf1 ip4:178.62.246.212 ip6:2a03:b0c0:2:d0::5c7:2001 a mx include:_spf.mail.ru ~all"

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3 answer(s)

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Vladimir Dubrovin, 2016-06-17
@viphorizon

Most likely everything is OK, but it depends on how many MX records you have for the domain. SPF is limited to 10 name resolutions (requests to the DNS server). 1 permission is required for "a", another one for "include" but mx requires 1 permission for MX itself + a separate permission is required for each mx entry. If you have more than 7 mx records, which is possible but unlikely, then this spf record will be considered invalid.
ip6 will be useful if in some situations you send emails over IPv6.

D

Di ExTreMe, 2016-06-17
@ExTreMeUA

v=spf1 include:_spf.google.com ~all
v=spf1 mx ip2a03:b0c0:2:d0::5c7:2001 include:gmail.com ~all

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romsla, 2016-06-21
@romsla

ip addresses can be omitted if they are present in "a" "mx" records
"v=spf1 a mx include:_spf.mail.ru ~all"