I got serveral domainnames on my RaQ and one domain name receives mail for another virtual site.

So I added the mail alias "bla" for domain name1.com and when I mail to bla@name1.com it returns with error message "User unknown".

When mailing to adriaan@name1.com (what I didn't add as mail alias in that virtual site) I receive the mail in my mailbox (while I use it for another domain name).

MX record of name1.com is name1.com (like all my other domains).

Adriaan