Kikagua rekodi ya SPF
Kikagua SPF: soma rekodi ya SPF ya kikoa, orodhesha mbinu zake na uhesabu utafutaji wa DNS dhidi ya kikomo cha 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.
Kuhusu Kikagua rekodi ya SPF
Kikagua SPF: soma rekodi ya SPF ya kikoa, orodhesha mbinu zake na uhesabu utafutaji wa DNS dhidi ya kikomo cha 10.
Sehemu ya kitengo cha “Data na mitandao” cha SmartCalcy. Kinaendeshwa kwenye kivinjari chako bila akaunti, kinatumia sarafu na vipimo vyako (vibadilishe juu ya ukurasa), na kinatoa makadirio kwa taarifa tu, kwa hiyo angalia mwongozo rasmi kabla ya kutegemea matokeo.
Jinsi ya kutumia Kikagua rekodi ya SPF
Kinachohesabu na wakati wa kukitumia
Kinasoma rekodi ya SPF ya kikoa, orodha ya seva zinazoruhusiwa kutuma barua pepe kwa niaba yake, na kuikagua kwa makosa ya kawaida: rekodi zaidi ya moja, kukosekana kwa sera ya “all”, na utafutaji wa DNS zaidi ya 10, jambo linalofanya SPF ishindwe. Kinafuata rekodi za include ili kuhesabu utafutaji.
Jinsi ya kukitumia, hatua kwa hatua
- Weka kikoa, kwa mfano example.com.
- Bonyeza “Kagua SPF”.
- Soma uamuzi na idadi ya utafutaji wa DNS uliotumika kati ya 10.
- Pitia orodha ya mbinu (mechanisms) na maonyo yoyote.
Maana ya kila ingizo
- Domain jina – The domain used huko the sender’s address.
Jinsi ya kusoma matokeo
- 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.
Fomula
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.
Mfano uliofanyiwa kazi
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.
Dhana na mipaka
- 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.
Makosa ya kawaida
- Publishing two SPF records. Only one ni allowed, so unganisha 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.
Maswali yanayoulizwa mara kwa mara
SPF ni nini?
Sender Policy Framework ni rekodi ya DNS inayoorodhesha seva zinazoruhusiwa kutuma barua pepe kwa kikoa.
Kuna tofauti gani kati ya -all na ~all?
-all inawaomba wapokeaji kukataa watumaji wasioorodheshwa. ~all inawaomba kupokea lakini kuweka alama kwenye barua kuwa ya kutiliwa shaka.
Kwa nini kuna kikomo cha utafutaji 10?
Kinazuia rekodi kuwalazimisha wapokeaji kufanya minyororo mirefu ya maswali ya DNS. Kukizidi kunafanya SPF irudishe hitilafu ya kudumu.
Je, SPF inatosha kuzuia ughushi?
Hapana. Itumie pamoja na DKIM na DMARC.
Je, zana hii inatuma barua pepe?
Hapana. Inasoma tu rekodi za DNS.