LumiSoft Mail Server
LumiSoft Mail Server is written in C# with source. The site says the program is freeware although it isn’t clear what license the source is released under.
The site says it features:
- Supports multiple domains
- Supports multiple e-address for one mailbox
- Supports aliases(Mailing lists)
- Supports email routing. eg ivar pattern routes all addresses containing ivar to specified mailbox or remote address
- IP access filtering
- SMTP AUTH (LOGIN) (supported authentication types)
- SMTP SIZE, PIPELINING, 8BITMIME support
- POP3 APOP command
- POP3 remote accounts
- User mailbox size limit
- Full MS SQL server support
- Nice GUI for administation
- Well commented source included