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???? SPF

1. ?? ?? SPF?

???????: ???? SPF ???? ????? ??????. SPF ?? ????? ?????? ?????? ?????????? ??????? ???? ???????? ???????? ??? ??????? ????. ???? ??? ???????? ?????? ?????????? ?? ???? ?????? ?? ????? ??? ???? ?????? ?? ????? IP ?????? ?????? ??????????. ????? ????? SPF ?? ??? DNS ???? ?????? ?????? ??? ????? ???????? ??????? ??? ?????? ?????? ??????????. ????? ????? ??????? ?????? ??????????? ???? ????? ??? ??? ??? ??? ??? ???? ?????? ??? SPF ?????? ??? ??? ??? ????? IP ????? ??????? ?????? ??? ??????? ??????? ???. ??? ???? ????? ??????? ?? ???? ??????? ?????? ?????????? ?????? ??? ????? ???? ?? ???? ???????. ???? ?? ????? ??????? SPF ?? ????? ???? ??????? ???????? ?????? ?????????? ?????? ???? ??????? ??? ??????? ????. ?? ????? ????? ????? ????? ????? ???? ???? ?????? ?????????? ???? ???????? ?????????? ?? ??????? ????? ?????? ????? ?????? ?????? ??????????.

2. ??? ???? ?????? SPF ??????? ?????? ?????? ?????????

???????:

1. ????? ?????? IP ?????? ??????? ?????? ?????? ????? ??????: ???? ????? ??? ???????? ??? ??? SPF. 2. ????? ?????? ??? ???? ???? ????? DNS ?????? ?????? ????? ??????: ?????? ?? ??? ??????? ?? ???? ???? ??? ?????? ????? ?? ?? ???? ?????????

2. ????? ?? ????? ??? TXT: ?? ???? ???? DNS? ???? ?? ??? TXT ?? ?????? ???????

3. ????? ??? SPF: ???? ??? SPF ?? "v=spf1 +a/+mx +ip4 +ip4:mail.example.com -all"? ???:

"v=spf1": ???? ????? SPF

"a" ?? "mx": ???? ??? ?? ?????? ????? ??????? ?? ???? ??? A ?? ??? MX

"ip4": ???? ?????? IP ??????? ??? ?????? ??????

"mail.c??email.coremail": ??? ???????? ???? ???? ????? ???? ?????

"-all": ???? ??? ??? ?????? ?? ???? ??????? ??????

4. ??? ?????????: ???? ?? ??? ????????? ???? ???? ?? ???? ???? DNS

3. ??? ???? ????? ?????? ?? SPF?

1) ????? ??? SPF ?? ??? a ???? ?????? (???? c??email.cn)

v=spf1 a:c??email.cn2 -all

2) ????? ??? SPF ?? ??? mx ???? ??????

v=spf1 mx -all

3) ????? ??? SPF ?? ??? ptr ???? ??????

v=spf1 ptr -all

4) ????? ??? SPF ?? ????? ????? IP ???????? ???? IP

v=spf1 ip4:106.52.172.248 ip4:61.164.47.194/28 -all

5) ????? ????? SPF ??????? ???? (???? spf.ic??email.net)

v=spf1 include:spf.ic??email.net

??????: ???? ??????? ??????? ????? ????? ??? ??? ?? ???? ??? ???? ??? ?? ??????? ???? ?? v=spf1 ?????? ?? -all ?? ???? ??????. ??? ???? ??????: v=spf1 mx ip4:106.52.172.248 include:spf.ic??email.net -all