Dab tsi yog SPF Cov Ntaub Ntawv? Yuav Ua Li Cas Tus Xa Txoj Cai Lij Choj Ua Haujlwm Kom Tsis Txhob Phishing Emails?

Cov ntsiab lus thiab kev piav qhia ntawm yuav ua li cas ib Ntaub ntawv SPF Cov haujlwm tau piav qhia hauv qab ntawm SPF Record builder.

SPF Record Builder

Nov yog ib daim ntawv uas koj tuaj yeem siv los tsim koj tus kheej TXT cov ntaub ntawv ntxiv rau koj lub npe lossis subdomain uas koj xa email los ntawm.

Nws tau zoo heev thaum peb tsiv peb lub tuam txhab email rau Google los ntawm kev tswj hwm IT kev pabcuam peb tau siv. Ua ntej nyob rau hauv Google, peb yuav tsum tau muab tso rau hauv kev thov rau tej yam kev hloov, sau ntxiv, thiab lwm yam. Tam sim no peb muaj peev xwm lis nws tag nrho los ntawm Google tus yooj yim interface.

Ib qho kev poob qis uas peb pom thaum peb pib xa yog qee cov emails ntawm peb lub cev tsis ua rau hauv inbox ... txawm tias peb lub inbox. Kuv tau nyeem qee yam ntawm Google cov lus qhia rau Neeg Xa Khoom Loj Email thiab sai sai tau mus ua hauj lwm. Peb muaj email tuaj tawm ntawm 2 daim ntawv thov uas peb tuav, lwm daim ntawv thov uas lwm tus tswv tsev ntxiv rau Email Service Provider. Peb qhov teeb meem yog tias peb tsis muaj SPF cov ntaub ntawv qhia rau ISPs tias cov emails xa tawm ntawm Google yog peb li.

Lub Sender Policy Framework yog dab tsi?

Sender Policy Framework yog email authentication raws tu qauv thiab ib feem ntawm email cybersecurity siv los ntawm ISPs los thaiv phishing email los ntawm kev xa mus rau lawv cov neeg siv. Ib SPF Cov ntaub ntawv yog cov ntaub ntawv sau npe sau tag nrho koj cov npe, IP chaw nyob, thiab lwm yam uas koj xa email los ntawm. Qhov no tso cai rau txhua tus ISP saib koj cov ntaub ntawv thiab lees paub tias email los ntawm qhov chaw tsim nyog.

Phishing yog ib hom kev dag ntxias hauv online uas cov tub sab nyiag siv social engineering cov txheej txheem los ntxias tib neeg kom muab cov ntaub ntawv rhiab, xws li passwords, credit card tooj, lossis lwm yam ntaub ntawv ntiag tug. Cov neeg tawm tsam feem ntau siv email los ntxias cov tib neeg los muab cov ntaub ntawv ntiag tug los ntawm kev zais lawv tus kheej ua lag luam raug cai ... zoo li koj li lossis kuv.

SPF yog ib lub tswv yim zoo - thiab kuv tsis paub meej tias vim li cas nws tsis yog txoj hauv kev tseem ceeb rau cov emails ntau thiab spam-thaiv tshuab. Koj yuav xav tias txhua tus neeg sau npe sau npe yuav ua rau nws yog ib qho taw qhia los tsim kom muaj tus wizard txoj cai rau hauv nws rau leej twg los sau cov peev txheej ntawm email lawv yuav xa.

Ib Daim Ntawv Teev Npe SPF ua haujlwm li cas?

An ISP tshawb xyuas cov ntaub ntawv SPF los ntawm kev ua cov lus nug DNS kom rov qab tau cov ntaub ntawv SPF cuam tshuam nrog lub npe ntawm tus xa email chaw nyob. ISP mam li ntsuas cov ntaub ntawv SPF, ib daim ntawv teev npe IP chaw nyob lossis tus tswv tsev tso cai xa email sawv cev ntawm tus sau tawm tsam IP chaw nyob ntawm tus neeg rau zaub mov xa email. Yog tias tus neeg rau zaub mov tus IP chaw nyob tsis suav nrog hauv SPF cov ntaub ntawv, ISP tuaj yeem chij tus email uas tuaj yeem dag lossis tsis lees txais email tag nrho.

Cov txheej txheem kev txiav txim yog raws li nram no:

1. ISP ua cov lus nug DNS los muab cov ntaub ntawv SPF cuam tshuam nrog tus xa email chaw nyob sau npe.
2. ISP ntsuas cov ntaub ntawv SPF tiv thaiv tus IP chaw nyob ntawm email server. Qhov no tuaj yeem qhia hauv CIDR hom ntawv kom suav nrog ntau qhov chaw nyob IP.
3. ISP ntsuas tus IP chaw nyob thiab xyuas kom meej tias nws tsis nyob ntawm ib qho DNSBL server raws li tus paub spammer.
4. ISP kuj ntsuas DMARC thiab BIMI cov ntaub ntawv.
5. ISP tom qab ntawd tso cai xa email, tsis lees txais nws, lossis muab tso rau hauv cov ntawv tais ceev tseg nyob ntawm nws txoj cai xa tawm sab hauv.

Yuav Ua Li Cas Sau Daim Ntawv Pov Thawj SPF

Cov ntaub ntawv SPF yog TXT cov ntaub ntawv uas koj yuav tsum tau ntxiv rau qhov chaw koj xa email nrog. SPF cov ntaub ntawv tsis tuaj yeem ntev dua 255 tus cim thiab tsis tuaj yeem suav nrog ntau tshaj kaum suav nrog cov nqe lus.

• Pib nrog v=spf1 tag thiab ua raws nws nrog tus IP chaw nyob tso cai xa koj email. Piv txwv li, v=spf1 ip4:1.2.3.4 ip4:2.3.4.5 .
• Yog tias koj siv tus neeg thib peb xa email sawv cev ntawm cov lus nug, koj yuav tsum ntxiv suav nrog rau koj cov ntaub ntawv SPF (piv txwv li, suav nrog: domain.com) los xaiv tus thib peb tus neeg xa khoom raug cai 
• Thaum koj tau ntxiv tag nrho cov chaw nyob IP tso cai thiab suav nrog cov nqe lus, xaus koj cov ntaub ntawv nrog ib qho ~all or -all tag. Ib ~ tag nrho qhia a soft SPF ua tsis tau thaum ib-tag nrho qhia tias a nyuaj SPF ua tsis tau. Hauv lub qhov muag ntawm cov chaw xa ntawv loj ~ tag nrho thiab -tag nrho yuav ua rau SPF tsis ua haujlwm.

Thaum koj tau sau koj cov ntaub ntawv SPF, koj yuav xav ntxiv cov ntaub ntawv rau koj tus sau npe sau npe.

Piv txwv ntawm SPF Cov Ntaub Ntawv

v=spf1 a mx ip4:192.0.2.0/24 -all

Cov ntaub ntawv SPF no hais tias txhua tus neeg rau zaub mov uas muaj cov ntaub ntawv sau npe A lossis MX, lossis ib qho chaw nyob IP hauv 192.0.2.0/24 ntau, tau tso cai xa email sawv cev ntawm tus sau. Cov -ib Thaum kawg qhia tias lwm qhov chaw yuav tsum ua tsis tau qhov kev kuaj xyuas SPF:

v=spf1 a mx include:_spf.google.com -all

Cov ntaub ntawv SPF no hais tias txhua tus neeg rau zaub mov nrog lub npe A lossis MX cov ntaub ntawv, lossis ib tus neeg rau zaub mov suav nrog SPF cov ntaub ntawv rau lub npe "_spf.google.com", raug tso cai xa email sawv cev ntawm tus sau. Cov -ib Thaum kawg qhia tias lwm qhov chaw yuav tsum ua tsis tau qhov kev kuaj xyuas SPF.

v=spf1 ip4:192.168.0.0/24 ip4:192.168.1.100 include:otherdomain.com -all

Cov ntaub ntawv SPF no qhia meej tias txhua tus email xa los ntawm tus sau npe no yuav tsum los ntawm IP chaw nyob hauv 192.168.0.0/24 network ntau yam, ib tus IP chaw nyob 192.168.1.100, lossis ib qho chaw nyob IP tau tso cai los ntawm SPF cov ntaub ntawv ntawm otherdomain.com sau npe. Cov -all Thaum kawg ntawm cov ntaub ntawv qhia meej tias tag nrho lwm qhov chaw nyob IP yuav tsum raug kho raws li kev kuaj xyuas SPF ua tsis tiav.