Can't get mail (CentOS 5.2 + ISPconfig 2.2.29)

[wammy28]

Dear all
I had configured my web real IP website with ISP config.
1. I found porblems that I can send my mail to gmail or any. But when I reply I couldn't get any e-mail. Nothing wrong with gmail. It didn't say any error.
2. I'm afraid to send it back to my address because It will go to endless loop until I stop process.
3. /web is find.
Please help!!

Regards

[wammy28]

Sorry I found it. I didn't declare my 2nd level domain name to my DNS providers. After I did it, my mail arrived.
However I still afraid about looping e-mail. How to avoid it and how it happen.
Thanks

[till]

What about sending the email to a slightly different email address on your server? You can set this second address as alias while you still use the first address for sending.

[wammy28]

Thanks Till for your answer.

I have another probelm that I accidentally delete web1_admin user in order to make the admin email short. I changed setting prefix in server setting.
Now I try to add admin account again but ISPconfig say it already there. I can't use this account nake even I empty my recycle bin.
I try to look in search but there are no answer.

[till]

Please take a look at all recycle bin's, there is more then one and empty all of them.