Mai duba SPF record
Mai duba SPF: karanta SPF record na domain, jera mechanisms ɗinsa ku ƙirga binciken DNS a kan iyakar 10.
Queries go to Cloudflare’s public DNS over HTTPS service when you press the button. Up to 15 queries are made to follow include records.
Game da Mai duba SPF record
Mai duba SPF: karanta SPF record na domain, jera mechanisms ɗinsa ku ƙirga binciken DNS a kan iyakar 10.
Ɓangare ne na sashen “Bayanai da hanyar sadarwa” na SmartCalcy. Yana aiki a burauzar ku ba tare da asusu ba, yana amfani da kuɗinku da ma'aunanku (canza su a saman shafin), kuma yana ba da ƙiyasi don bayani kawai, don haka duba jagorar hukuma kafin ku dogara da sakamako.
Yadda ake amfani da Mai duba SPF record
Abin da yake lissafawa da lokacin amfani da shi
Yana karanta SPF record na domain, jerin sabobin da aka ba izinin aika imel a madadinsa, kuma yana duba shi don kurakurai na yau da kullum: record fiye da ɗaya, rashin manufar “all”, da binciken DNS fiye da 10, wanda ke sa SPF ya gaza. Yana bin include records don ƙidaya binciken.
Yadda ake amfani da shi, mataki-mataki
- Shigar da domain, misali example.com.
- Danna “Duba SPF”.
- Karanta hukunci da adadin binciken DNS da aka yi amfani da su cikin 10.
- Duba jerin mechanisms da duk wani gargaɗi.
Ma'anar kowace shigarwa
- Domain suna – The domain used a the sender’s address.
Yadda ake karanta sakamako
- Verdict – Looks valid, or Needs attention when a problem is found.
- Policy – What happens to mail from servers that are not listed: hard fail, soft fail, neutral or allow.
- DNS lookups – Lookups needed by include, a, mx, ptr, exists and redirect terms, compared with the limit of 10.
- Mechanisms – Every term in the record, with included records indented beneath their parent.
Dabarar lissafi
The record is the TXT value starting v=spf1. Each include, a, mx, ptr, exists or redirect term costs one DNS lookup, and included records add their own. ip4 and ip6 terms and “all” cost none. The RFC limit is 10 lookups.
Misali da aka warware
v=spf1 include:_spf.example.net a mx -all uses three lookups for its own terms plus those inside the included record, and ends in -all, so unlisted servers are rejected.
Zato da iyakoki
- At most 15 queries are made while following includes, and nesting stops after 5 levels.
- A domain may need a record only for mail it sends. Domains that send no mail should publish v=spf1 -all.
- The check does not test whether a particular server would pass.
Kurakuran da aka saba yi
- Publishing two SPF records. Only one shi ne allowed, so haɗa them into one.
- Ending with +all, which lets anyone send as your domain.
- Adding every email service as an include and passing 10 lookups, which turns SPF into a permanent error.
Tambayoyin da ake yawan yi
Mene ne SPF?
Sender Policy Framework DNS record ne da ke lissafa sabobin da aka ba izinin aika imel don domain.
Mene ne bambanci tsakanin -all da ~all?
-all yana roƙon masu karɓa su ƙi masu aikawa da ba a lissafa ba. ~all yana roƙonsu su karɓa amma su yi wa imel alama a matsayin abin tuhuma.
Me ya sa akwai iyakar bincike 10?
Yana hana record tilasta wa masu karɓa shiga dogon jerin tambayoyin DNS. Wuce shi yana sa SPF ya dawo da kuskure na dindindin.
Shin SPF ya isa don hana spoofing (yin kamar wani)?
A'a. Yi amfani da shi tare da DKIM da DMARC.
Shin wannan kayan aiki yana aika imel?
A'a. Yana karanta DNS records ne kawai.