This page lets you check a DNS zone. It will perform a set of checks on your name servers and email servers. And give recommendations to improve your setup.
Use this form to test if your mail server is accepting email. e.g. if you are not sure if your ISP is intercepting outgoing SMTP traffic from your PC. Or if a client/user is having a problem and you want to see if you can reproduce it (without having to setup a separate account in your email client).
Use this form to test if your POP3 or IMAP mail server returning mail. Use this tool if you a client/user is having a problem accessing their email and you want to see if you can reproduce the problem without setting up their account in your email client.
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