Email troubleshooting guides
Mailgun setup guides, organized by problem
Browse Mailgun MX, SPF, and DKIM setup guides for sending domains.
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Mailgun: DKIM record not verifyingFix a Mailgun sending domain that remains unverified or produces DKIM failures by matching its provider-issued DNS record and active signing domain.
Mailgun: inbound routes not receiving mailFix a Mailgun inbound Route that is not receiving messages by checking the receiving domain, public MX route, and active Route expression.
Mailgun: SPF record for provider sendingAuthorize the Mailgun envelope sender in the one SPF policy published for the exact Mailgun sending domain.
Primary sources: Primary technical reference.