电子邮件发送测试仪

If you have problems with your server sending emails, usually a SMTP or DNS problem, this is it for testing.

Try to send 1 mail to the special single-use email given here, and it will analyse the results:

• Your SpamAssassin score & more important, its detailed scores (ex: “From abused NTLD” or “Untrustworthy TLDs”) … all of which can be arguable, but at the end, this is how remote servers see your emails …
• if your email or domain is blacklisted (more than 20 blacklisting servers tested)
• SPF, DKIM, DMARC
• if the content contents errors & how it is viewed
• the header
• the DNS used

and more