mail server setup

Mail server that supports: virtual domains smtpauth (with ssl) dnsbl spam rejection procmail mailer spamassasin webmail(openwebmail or sqirell) minimal user database frontend (option) Migration from present mail server should not be to complicated(sendmail/dovecot mailboxes in /var/spool/mail, passwords in shadow). We do have preference to keep sendmail/dovecot combination but are willing to listen to suggestions. Migration of 500+ accounts should be made overnight. We would prefer to store passwords in database (mysql) but users should not be forced to change password because of migration to new server. Machine is Fedora V, clean install. We prefer source installs but are willing to discuss it. ## Deliverables we expect to get software installed on machine and to operate for few days in test mode with few domains. A log of all actions on server should be made with references to source trees, configure options etc. We expect all eventually needed scripts to allow for easy and smooth migration from present server to new one. Software should be installed in manner optimal for medium to large number of users (spamassasin as server). ## Platform linux Fedora V