Quote Originally Posted by canopy View Post
Apparently, this problem crops up randomly on certain configurations of Windows. In most cases, a restart of XAMPP or the PC after installation is all that is required. However, in other cases, the restart doesn't solve the problem at all ...

This problem might be caused by a corrupted user database within Mercury. I am still working on this issue and have tested it on 3 different PCs running Windows XP SP 2 with no prior XAMPP installed and still have not run into this problem... I am currently waiting for my copy of Windows Vista to be delivered so I can run a test to see if the problem can be reproduced to aid in my analysis.

As for the admin,postmaster and newuser user accounts, they should already be there immediately in Mercury after XAMPP is installed. You shouldn't have to manually add those accounts. These accounts are also not added by Thunderbird.

Thanks for all the feedback. My sincere apologies to those who have encountered this problem.

No problem, system issues can be fun to get right. As it is, all of this stuff thus far has been provided for free, so I am more than willing to troubleshoot.

With mine, the admin,postmaster and newuser were not included and, at present, when I send mail, I get a successful mail sent message, but I get no mail.

I am using xammp to run all of this on my cpu, this is not a live site yet.