Documentation

Process SPF authentication. IP is an IP address of an SMTP peer. If Domain is specified from SMTP MAIL FROM, authentication is based on SPF. If Domain is specified from the From field of mail header, authentication is based on SenderID. If condition reaches Limit, SpfPermError is returned.

>>> rs <- makeResolvSeed defaultResolvConf

pass (IPv4 & IPv6):

>>> withResolver rs $ \rslv -> runSPF defaultLimit rslv "mew.org" "210.130.207.72"
pass
>>> withResolver rs $ \rslv -> runSPF defaultLimit rslv "iij.ad.jp" "2001:240:bb42:8010::1:126"
pass

hardfail:

>>> withResolver rs $ \rslv -> runSPF defaultLimit rslv "example.org" "192.0.2.1"
hardfail

redirect and include:

>>> withResolver rs $ \rslv -> runSPF defaultLimit rslv "gmail.com" "72.14.192.1"
pass
>>> withResolver rs $ \rslv -> runSPF defaultLimit rslv "gmail.com" "72.14.128.1"
softfail

limit:

>>> let limit1 = defaultLimit { ipv4_masklen = 24 }
>>> withResolver rs $ \rslv -> runSPF limit1 rslv "gmail.com" "72.14.192.1"
softfail
>>> let limit2 = defaultLimit { limit = 2 }
>>> withResolver rs $ \rslv -> runSPF limit2 rslv "nifty.com" "202.248.88.1"
permerror

Limit for SPF authentication.

Default value for Limit.

>>> defaultLimit
Limit {limit = 10, ipv4_masklen = 16, ipv6_masklen = 48, reject_plus_all = True}