This week, my lotus domino server 6.5.1’s mail.box just stopped working. I looked through the log for the past 10 hrs. & can not find any error messages or any thing. The symptoms were this: 1. I had internet access, 2. people could log onto their lotus clients, no errors there. 3. when they would send an e-mail they did not receive any kind of error message back or an undeliverable error. 4. on my domino console, I was receiving no error messages, everything looked like it was sending & receiving e-mail. After talking to domino support the whole day, we disabled trend micro’s scan mail 3.0, & the dns blacklist that domino supports. This did nothing. The only thing that fixed the issue was to rename the Mail.box & create a new mail.box. I have 35 lotus notes users not a lot, & their mail files are not more than 5mb. After looking on notes.net & not seeing anything similar, ANY IDEAS OF WHAT WOULD CAUSE THIS. The bad thing was that the domino tech, had no idea of what was going on or were the mail was going.