Send a domain and contact email. We will check the public mail configuration and tell you what should be fixed first.
MX: where your mail is delivered
SPF: who may send email from your domain
DKIM: the digital signature of your emails
DMARC: what happens to forged emails
PTR / rDNS: whether your server is trusted
Blacklists: whether your domain is blocked
Short report
Found issues
Recommendations
What to fix first
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