Gordano Messaging Suite is a complete mail server, with integrated anti-virus, anti-spam, and content filtering. As a mail server, it offers a cost-effective alternative to Microsoft Exchange and integrates tightly with Outlook in the same way that Exchange does. There are many additional features, such as support for dial-up collection of email from your ISP by POP3. It also has Extended Turn (ETRN) support for dial-up to extend SMTP should you need to use it. Client machines can be supported via POP3, IMAP, or a webmail interface.
Kerio offers a mail server with anti-virus, anti-spam, and content filtering. As a mail server, it is a cost-effective alternative to other products and offers extra features. For example, it can be used with a dial-up internet connection because it supports POP3 as well as SMTP for mail collection from an ISP. It has Extended Turn (ETRN) support for dial-up to extend SMTP if required. Client machines can be supported via POP3, IMAP, or a webmail interface.
MailScan can be installed on an existing mail server and is available in over twenty variants to support many third-party Windows-based mail servers. We tested the generic version aimed primarily at non-Windows mail server platforms, MailScan for SMTP Servers.
PineApp's Mail-SeCure is an appliance with models ranging from home user to enterprise network. We tested the 2040, a mid-range model aimed at SMEs that comes in a slim, rack-mountable case, includes a firewall and has three Ethernet ports (internal, external, and DMZ). Their unit is configured via a web interface.
MailMarshal is installed as an email gateway and may be used in conjunction with any SMTP-compatible email server. However, MailMarshal SMTP also supports POP3 mail protocols, and can act as a POP3 mail server for up to 300 users. It can also collect emails via POP3 for situations where there is a dial-up connection to the Internet.