spf query - SERP Analysis

https://mxtoolbox.com/spf.aspx

https://easydmarc.com/tools/spf-lookup

https://www.kitterman.com/spf/validate.html

https://dmarcian.com/spf-survey/

https://dnschecker.org/spf-record-validation.php

https://dmarcly.com/tools/spf-record-checker

https://www.spf-record.com/spf-lookup

https://www.mimecast.com/products/dmarc-analyzer/spf-record-check/

https://spf-checker.org/

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https://www.zoho.com/toolkit/spf-record-lookup.html

https://powerdmarc.com/spf-record-lookup/

https://redsift.com/tools/spf-checker

https://glockapps.com/spf-record-checker/

https://www.nslookup.io/spf-lookup/

https://emailsecurity.fortra.com/resources/spf

https://fraudmarc.com/spf-record-check

https://www.cloudflare.com/learning/dns/dns-records/dns-spf-record/

https://support.google.com/a/answer/33786?hl=en

https://wintelguy.com/spf-lookup.pl

https://toolbox.googleapps.com/apps/checkmx/

https://metacpan.org/pod/Mail::SPF::Query

https://learn.microsoft.com/en-us/defender-office-365/email-authentication-spf-configure

https://www.mimecast.com/content/spf-check/

https://www.mailhardener.com/blog/spf-lookup-limit-explained

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https://powerdmarc.com/check-spf-records-using-nslookup-spf/

https://dmarcadvisor.com/spf-check/

https://www.twilio.com/docs/sendgrid/ui/account-and-settings/spf-limitations

https://support.google.com/a/answer/10683907?hl=en

https://godmarc.com/tool/spf-record

https://en.wikipedia.org/wiki/Sender_Policy_Framework

https://www.wuxwebtools.com/bulk-spf-lookup

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https://www.okta.com/identity-101/spf-record-check/

https://www.duocircle.com/what-is-spf-lookup-limit-and-how-to-fix-it

https://tools.sendmarc.com/explain/spf

https://dmarcian.com/spf-syntax-table/

https://support.forcepoint.com/s/article/How-to-check-SPF-records

https://www.smartlead.ai/spf-record-lookup

https://app.dmarcanalyzer.com/dns/spf

https://www.spf-record.com/

https://www.reddit.com/r/sysadmin/comments/19a0l1h/spf_lookup_limit_of_10_how_serious_is_that/

https://mxtoolbox.com/SPFRecordGenerator.aspx

https://www.proofpoint.com/us/cybersecurity-tools/dmarc-spf-creation-wizard

https://datatracker.ietf.org/doc/html/rfc7208

https://www.duocircle.com/content/spf-records/spf-records-check

https://help.mdaemon.com/mdaemon/en/security--spf__sender_id.html

https://autospf.com/spf-record-tester/spf-record-check-google/

https://www.sendbuzz.io/spf-dmarc-record-checker/

https://www.salesforge.ai/tools/spf-checker

https://easydmarc.com/tools/spf-record-raw-check-validate

https://help.proofpoint.com/Essentials/Support/Support_Knowledge_Base/Email_Security/What_is_SPF_and_how_to_check_an_SPF_record

https://www.mailhardener.com/tools/spf-validator

https://www.mailmodo.com/tools/spf-checker/

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https://www.mxlayer.com/email-tools/spf-checker-lookup-tool

https://www.skysnag.com/spf-checker/

https://answers.microsoft.com/en-us/msoffice/forum/all/spf-and-dkim-records-how-do-i-find-out-what-they/20341215-ea7d-42f8-8a96-9e947ea333ce

https://www.cisco.com/c/en/us/support/docs/security/secure-email-gateway/217073-how-to-use-dig-nslookup-to-find-spf-dki.html

https://linux.die.net/man/1/spfquery

https://www.mail-tester.com/spf-dkim-check

https://www.accuwebhosting.com/resources/show-spf-record

https://mailmeteor.com/tools/spf-checker

https://threatcop.com/spf-record-checker

https://vamsoft.com/support/tools/spf-syntax-validator

https://docs.trendmicro.com/en-us/documentation/article/trend-micro-email-security-online-help-sender-policy-framew

https://www.twilio.com/docs/sendgrid/ui/account-and-settings/spf-records

https://www.valimail.com/resources/guides/email-security-best-practices/spf-record-syntax/

https://emailauth.io/spf-record-checker

https://www.thexyz.com/tools/spf-check

https://www.reddit.com/r/sysadmin/comments/d5v606/please_do_us_all_a_favour_check_you_spf_records/

https://docs.oracle.com/cd/E19566-01/819-4428/gcjdi/index.html

https://www.youtube.com/watch?v=rk0A4H2xYo8

https://github.com/trailofbits/spf-query/blob/master/README.md

https://godmarc.com/blogs/how-to-perform-an-advanced-spf-record-lookup-for-your-domain/

https://community.spiceworks.com/t/reverse-dns-lookup-on-spf-check/577245

https://www.valimail.com/resources/guides/email-security-best-practices/spf-failure/

https://www.site24x7.com/tools/spf-validator.html

https://tools.mxguardian.net/spf-lookup

https://published.gitlab.io/email-security/spf-record-checking-tools-and-techniques/effective-implementation.html

https://blog.101domain.com/dmarc/understanding-your-spf-checker-tool-report

https://knowledge.hubspot.com/marketing-email/manage-email-authentication-in-hubspot

https://www.youtube.com/watch?v=8TZTuEfYcus

https://www.npmjs.com/package/spf-check

https://secure.fraudmarc.com/tool/spf/

https://www.activecampaign.com/tools/spf-checker

https://www.cloudflare.com/learning/email-security/dmarc-dkim-spf/

https://www.buffsend.com/spf-checker

https://mailtrap.io/blog/spf-records-explained/

https://published.gitlab.io/email-security/navigating-spf-records-tools/for-effective-checking.html

https://services.seekdotnet.com/knowledgebase/268/How-to-check-your-SPF-record.html

https://www.ewg.org/sunscreen/

https://www.mailerlite.com/help/how-to-verify-and-authenticate-your-domain

https://www.nslookup.io/

https://toolbox.googleapps.com/apps/dig/