I am running a plesk box 2.5 or RH 7 I believe. Anyhow this happens about everyday to the point where I can get or send mail. My pop3 stops working. I could be at my other job at work and someone trys to send mail to me and they call and say it bounced back?

My hosting company is not much help right now. I am using one of their DNS servers and one of my own on the box. Webmail works fine I was able to check all my mail this morning via webmail removing the spam etc. But outlook can't open it up the mail folder.

I sent a test message from yahoo to my server here is what I got:
Message from yahoo.com.
Unable to deliver message to the following address(es).

<shawn@bestofhumor.com>:
Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4)


I have an MX record configured in the domain:
bestofhumor. com. MX 10 mail. bestofhumor. com.

what else can I look at? Where is the mail log located at?

Thanks
Shawn