SMTPDiagPro is a small tool to test the configuration of a SMTP-Server including DNS MX.

Author test it for example whether the DNS MX records are set correctly and if an Exchange server via SMTP from the Internet is properly accessible. So he accepts or rejects the right messages and the antivirus program works well.

MTPDiagPro Features:
1. Don't need to install (portable app)
2. Read DNS MX and shows welcome message
3. Send Mail to a single host, the first DNS MX host or all DNS MX hosts
4. Save settings in profiles
5. Can have unlimited recipients or attachments
6. Auto-text for subject and body
7. Shows detailed information about the actions
8. Specify local hostname
9. Use Encryption with TLS and SSL
10. test hosts for begin blacklists using spamhaus.org
11. test hosts for begin open relays
12. Spam test option using GTUBE and keywords
13. Virus test option using EICAR

The license of this software is Freeware, you can free download and free use this email tool software.