SPF record checker

كيفية استخدام SPF record checker

ما الذي يحسبه ومتى تستخدمه

Reads a domain’s SPF record وthe list من من servers allowed إلى send email مقابل it, وchecks it مقابل common faults: more than one record وa missing “all” policy, ومن more than 10 DNS lookups, which makes SPF fail. It follows include records إلى count the lookups.

طريقة الاستخدام خطوة بخطوة

1. Enter the domain, مقابل مثال مثال.com.
2. Press “Check SPF”.
3. Read the verdict وthe number من DNS lookups used out من 10.
4. Review the mechanisms list وany warnings.

معنى كل مُدخل

• Domain الاسم – The domain used في the sender’s address.

كيف تقرأ النتائج

• Verdict – Looks valid, أو Needs attention when a problem هو found.
• Policy – من What happens إلى mail from servers that are not listed: hard fail, soft fail, neutral أو allow.
• DNS lookups – Lookups needed by include وa, mx, ptr, exists وredirect terms, compared with the limit من 10.
• Mechanisms – Every المدة في the record, with included records indented beneath their parent.

الصيغة

The record هو the TXT value starting v=spf1. Each include وa, mx, ptr, exists أو redirect term costs one DNS lookup, وincluded records add their own. ip4 وip6 terms و“all” cost none. The RFC limit هو 10 lookups.

مثال محلول

v=spf1 include:_spf.مثال.net a mx -all uses three lookups مقابل its own terms plus those inside the included record, وends في -all, so unlisted servers are rejected.

الافتراضات والحدود

• بسعر most 15 queries are made while following includes, وnesting stops after 5 levels.
• A domain may need a record only مقابل mail it sends. Domains that send لا mail should publish v=spf1 -all.
• The check does not test whether a particular server would pass.

أخطاء شائعة

• Publishing two SPF records. Only one هو allowed, so merge them into one.
• Ending with +all, which lets anyone send as your domain.
• Adding every email service as an include وpassing 10 lookups, which دورات SPF into a permanent error.

الأسئلة الشائعة

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