This problem is encountered when the server is configured after the server is reloaded. Previous server configuration countless times, light car is ripe, how did this suddenly have this problem?
From the prompt, the reason is obvious: SMTP verification failed. However, the SMTP server has been selected in Foxmail to verify options? Previous Foxmail has this bug, but other servers are normal, so it can be affirmed, not foxmail issues. That question can only appear in the Imail server. Try to turn off the "Sending Authentication" option in the Imail-SMTP security settings, still the same problem! This is a bit abnormal! Further use of the client tool tool with IMAIL to test, and send and receive normal! That is not the problem of iMail! Where can I do it? I have a strange thing, but I don't believe in evil. Inverted a cup of tea, despite the heart, carefully think of the work process of Mail, where can I get wrong? The most likely is the port problem. Is there any program occupied 25 ports? In my heart, I suddenly opened IIS to see it, really! The default SMTP server is running!
When the server was used, it didn't use something, including SMTP, this time because it is too nervous, almost all use the default configuration, and IIS naturally configured SMTP! Turn off the IIS's SMTP default service, everything is normal! Solved, very simple, summarize, two points:
Microsoft's things are very powerful, and it is also very overbearing. If you have something, you should be, if you don't believe it or is right.
