Wayne makes a valid point in regards the need of a mailing list. My husband uses "post.office" which is for both a regular email server and list software. URL is <http://www.tenon.com/products/post_office/>. The site states "Post.Office is a scalable SMTP/POP3/IMAP messaging server designed to meet the needs of small and mid-sized ISPs." Costs: $295 for 100 mailboxes and 10 mailing lists.
---marlyse