1) What is the overall health check status of your mail server?
DNSreport started as a free tools to run your mail server against 100 over tests. The result is a full page report to tell you where goes wrong and why! Anyway, the full report is now stripped-down in the free service. Without subscribing to their paid service, users are able to view a summary of your test result. The result is layman-proof, check it out!
2) Is your mail server running on a small scale setup?
Check the IP address of your Webmail, POP, SMTP and Website. If all of them are identical, your mail server must have installed all these services in one server. Putting all eggs in one basket, bad ideas! You can use the web-based Dig tools from Geektools!
3. Is your mail server hosted in just one or multiple data centre?
Again, based on the Dig tools, you can tell if most of the IP address are in the same class (only the last set of numbers are different). If they are, chances they are in the same data centre. Geographically-dispersed data center provides higher availability support.
4. Do you have a Reverse DNS?
It is not end of the world if you don’t’ Anyway, having one means you email are less likely to be marked as Spam! Use AOL Postmaster’s Reverse DNS Check.
5. The recipient’s email address has some problems, how to verify?
Use Free Email Address Verifier. This email verification tool actually connects to the mail server and checks whether the mailbox exists or not.
Are you a Lazy bugs? Email Pin (pin@1.com.my). He can run the test for you, free of charge!
Thanks for these great tools, email is an essential part of business if something goes wrong what do you do?