When i try to set a catch all address to the main domain (the one is asked on install) it start to receive a lot of mails with numbers, its maybe because the email address for this account is not in the virtual alias file generated by ISPC. It will be good to create a "default" email alias to this account on install script (may be "undeleteable"(?)), that way a catch all address can be used. Did i write it clear? can it be done?
This is a known postfix problem. http://www.howtoforge.com/faq/index.php?action=artikel&cat=9&id=33&artlang=en&highlight=catchall Never use your (technical) server domain for email addresses, as an catchall will get all emails then.