[{"data":1,"prerenderedAt":162},["ShallowReactive",2],{"publication:en:P045":3},{"meta":4,"copy":17,"relatedArticles":153,"terms":154,"term":155,"resourceParent":156,"glossaryParent":159},{"id":5,"path":6,"kind":7,"keyword":8,"title":9,"seoTitle":10,"description":11,"incoming":12,"updated":16},"P045","\u002Fservices\u002Fdmarc-spf-dkim","service","DMARC setup service","DMARC setup service with SPF, DKIM and sender verification","DMARC setup service with SPF and DKIM","Configure SPF, DKIM and DMARC around your real sending systems. Israeli cybersecurity company, worldwide remote service, verified alignment and a documented handover.",[13,14,15],"\u002Fservices","\u002Fservices\u002Femail-domains","\u002Fservices\u002Fcorporate-email","2026-10-30",{"intro":18,"sections":19,"checklistTitle":98,"checklist":99,"faq":105,"sources":118,"links":125,"cta":148},"We map the systems that send email for your domain, configure SPF and DKIM and check real messages before recommending a DMARC policy. At handover you get the sender list, test results and remaining exceptions. Send your domain and the names of your email, website and other sending platforms to start.",[20,25,49,64,73,81,93],{"title":21,"paragraphs":22},"Start with the real sending systems",[23,24],"Your business may send through employee mailboxes, website forms, CRM, invoicing, marketing and support tools. The same visible From domain can be used in different ways by these services. Before editing DNS, identify the business owner, provider configuration, sending domain and test route for each legitimate source. Forgotten senders are a common reason for a policy change to disrupt operations.","A mailbox provider is not automatically responsible for every system that sends using the domain. Work begins with the authoritative DNS access, provider permissions and a list of functions that must keep working. Do not email us credentials or customer messages in an initial enquiry. If a provider or sender cannot be inspected, record the gap and agree how to resolve it.",{"title":26,"paragraphs":27,"table":30},"What SPF, DKIM and DMARC each establish",[28,29],"SPF evaluates authorization for the sending server against the relevant envelope domain. DKIM verifies a signature associated with its signing domain. DMARC relates authentication to the domain the recipient sees in From. A passing aligned SPF result or a passing aligned DKIM result can satisfy DMARC; every legitimate route does not universally have to pass both.","These checks do not establish that the message content is honest or that the individual requesting a payment is authorized. A compromised legitimate mailbox may send authenticated messages. A lookalike domain is a separate problem. Scope should distinguish authentication configuration from mailbox security, delivery troubleshooting and fraud-response decisions.",{"caption":31,"headers":32,"rows":36},"Three mechanisms, different acceptance evidence",[33,34,35],"Mechanism","What to check","What a pass does not prove",[37,41,45],[38,39,40],"SPF","Authorized sources and relevant evaluation path","That the visible From identity is independently authenticated",[42,43,44],"DKIM","A valid signature from the expected signing domain","Message confidentiality or the sender person's authority",[46,47,48],"DMARC","A passing aligned authentication route","Inbox placement or absence of mailbox compromise",{"title":50,"paragraphs":51,"sources":54},"Configure with provider-specific evidence",[52,53],"SPF changes need a current inventory and an understanding of its DNS-dependent evaluation limits, including nested dependencies. DKIM setup needs the provider's signing configuration as well as the correct selector and key publication. A DNS record that exists is not evidence that the production service is signing the messages you care about.","For each sender, agree an authorized test message, its expected visible domain and the receiving evidence used to assess it. Distinguish a DNS observation, a provider setting and a result in a delivered message. Use headers from a trusted receiving path and redact unnecessary addresses, content and identifiers before sharing evidence.",[55,58,61],{"label":56,"url":57},"RFC 7208: Sender Policy Framework","https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc7208.html",{"label":59,"url":60},"RFC 6376: DomainKeys Identified Mail","https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc6376.html",{"label":62,"url":63},"RFC 8601: interpreting Authentication-Results","https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc8601.html",{"title":65,"paragraphs":66,"sources":69},"Move toward enforcement using acceptance gates",[67,68],"A monitoring policy helps gather information before enforcement, but reports require interpretation and follow-up. Link observed sources to a real business function, resolve authentication or alignment failures and check periodic senders such as monthly billing. An observed source is not automatically legitimate, and one successful message is not coverage of an entire business cycle.","RFC 9989, published in May 2026, supersedes RFC 7489. Do not treat the older pct tag as a current guaranteed way to phase deployment. Choose a rollout and rollback method supported by the providers and applicable policy, test agreed routes and retain a decision-maker for exceptions. A calendar deadline alone is not evidence that enforcement is ready.",[70],{"label":71,"url":72},"RFC 9989: DMARC, May 2026","https:\u002F\u002Fwww.rfc-editor.org\u002Frfc\u002Frfc9989.html",{"title":74,"paragraphs":75,"example":78},"Define the deliverables before changing policy",[76,77],"Useful deliverables include the sending inventory, configuration changes, test evidence, chosen policy, unresolved routes and the owner who will review new senders. If a reporting product or licence is needed, state who owns it and whether its ongoing management is in scope. Implementation and ongoing monitoring are separate responsibilities even when they use the same dashboard.","The handover should make future changes manageable. A new marketing tool or replacement CRM can introduce another sending path. Record what the business must check before enabling it and which supplier will handle faults. We do not label a domain fully protected merely because a reject policy appears in DNS.",{"title":79,"text":80},"Illustrative rollout decision","Employee mail passes alignment, while an invoicing platform sends from the same visible domain with a different signing identity. The owner confirms the platform is legitimate. Resolve its supported configuration and test it before enforcement; do not remove it simply because it looks unfamiliar in a report. This is a planning example, not a measured client outcome.",{"title":82,"paragraphs":83,"sources":86},"Israeli specialization, worldwide service and clear limits",[84,85],"CyberFixCrew is an Israeli cybersecurity company focused on business websites and digital infrastructure. Email authentication is handled together with the site and other sending systems that depend on it. Remote coordination specifies authority, DNS ownership, time zones and supplier participation. The engagement identifies who can approve each change and who will maintain the sending configuration afterwards.","DMARC configuration does not guarantee Gmail or Microsoft inbox placement. Reputation, content, recipient policy and other factors can affect delivery. It does not secure every mailbox or prevent every display-name impersonation. Google and Microsoft publish their own sender guidance; the checks must fit the provider and sending pattern in use rather than a single record pasted into every domain.",[87,90],{"label":88,"url":89},"Google: sender requirements and authentication","https:\u002F\u002Fsupport.google.com\u002Fa\u002Fanswer\u002F81126?hl=en",{"label":91,"url":92},"Microsoft: configure DMARC","https:\u002F\u002Flearn.microsoft.com\u002Fen-us\u002Fdefender-office-365\u002Femail-authentication-dmarc-configure",{"title":94,"paragraphs":95},"What affects the quote and what to send first",[96,97],"The scope depends on domains, subdomains, sending platforms, access, unresolved legacy configuration and the amount of implementation and monitoring required. Third-party subscriptions and any separate mailbox investigation should be explicit. The project is quoted after mapping the systems and acceptance criteria.","Send the domain, mail platform if known, a list of business senders and the reason for the request. If you suspect actual account compromise or a fraudulent payment request, say so without forwarding secrets or payment details. Those situations need an appropriate incident or financial response alongside authentication work.","Before approving an authentication rollout",[100,101,102,103,104],"Map employee mail, website, CRM, billing and other legitimate senders.","Check actual message authentication and alignment, not DNS alone.","Assign an owner to unidentified sources and provider limitations.","Agree enforcement readiness, rollback and monitoring responsibility.","Separate DMARC scope from inbox guarantees and mailbox incident response.",[106,109,112,115],{"question":107,"answer":108},"Can you work with my existing email provider?","The starting point is the actual platform and the access it offers. We identify its supported SPF, DKIM and DMARC configuration and the separate website or business senders. Provider participation or an additional licence may be needed and is clarified before work.",{"question":110,"answer":111},"Will DMARC stop all emails pretending to be my business?","No, it addresses use of the protected domain under the receiving system's evaluation and policy. Display-name impersonation, lookalike domains and compromised legitimate accounts need different controls and investigation.",{"question":113,"answer":114},"Can we publish reject immediately?","Only after an authorized readiness decision based on the real sending routes and acceptable exceptions. A copied record or a single successful test does not prove the business is ready.",{"question":116,"answer":117},"Does a completed setup include ongoing monitoring?","Only if it is explicitly agreed. The handover must identify who reviews reports, investigates changes and approves new senders after implementation.",[119,120,121,122,123,124],{"label":56,"url":57},{"label":59,"url":60},{"label":71,"url":72},{"label":62,"url":63},{"label":88,"url":89},{"label":91,"url":92},[126,129,132,134,136,139,142,145],{"path":127,"label":128},"\u002Fblog\u002Femail-spoofing-domain","Investigate emails that appear to use your domain",{"path":130,"label":131},"\u002Fblog\u002Fspf-dkim-dmarc-explained","Understand SPF, DKIM and DMARC",{"path":14,"label":133},"Business email security and domain services",{"path":15,"label":135},"Business mailbox setup and migration",{"path":137,"label":138},"\u002Fservices\u002Faccess-2fa-audit","Account access and MFA implementation",{"path":140,"label":141},"\u002Fabout","Our Israeli company and service focus",{"path":143,"label":144},"\u002Fblog\u002Fdmarc-none-to-reject","Assess readiness before DMARC enforcement",{"path":146,"label":147},"\u002Fblog\u002Fdmarc-report-reading","Read aggregate reports and choose the next check",{"title":149,"description":150,"button":151,"type":152},"Map your senders before changing email policy","Tell us the domain, business mail platform and other sending systems. We will agree the configuration and verification scope.","Discuss DMARC setup","setup",[],[],null,{"path":157,"label":158},"\u002Fresources","Website security resources and templates",{"path":160,"label":161},"\u002Fglossary","Cybersecurity glossary for small businesses",1794134057297]