Suddenly my email server is collapsing. I just received about 25 emails containing a trojan. They were all detected and quarantined by virus protection on my PC. So I decided to filter that email address on my mail server.

I could not log into my mail server. So the mail continues to arrive and I could send test emails but I couldn't get admin access to the server. I'm hosting it on IIS and it has been running for years, I have the latest version installed. Not too long ago I changed the way I get certificates added. I used Certify the Web but noticed that SmarterMail could handle the process by itself so I switched to that method.

I noticed that port 9998 was an option so I tried it and I finally managed to obtain access as an admin. That doesn't work with https only http. When I tried to use the domain name of my email server (and https) it reported that it could not provide a secure connection.

 The certificate is valid according to what I can see but such a report indicates that it isn't the case. This has never been an issue until today. I honestly do not know what is up so have few ideas how to resolve it.

I think I will try to turn off SmarterMail's handling of the certificate and put the burden back on Certify The Web. I doubt that it will help but it should give me a bit more visibility and I can force certificate update at any time.

So does anyone have any advice, clues as to what is wrong, settings I should check, etc.? This has me concerned and has never been a problem. Wouldn't have noticed I couldn't log into the mail client site if it wasn't for the hacker attempts but I don't think the login issue has been a problem very long.