MailScan 4 for 1st UpMailServer is the world's first "Real-Time" e-mail scanner for the 1st UpMailServer. This server is published by Upland UK.

MailScan 4 for 1st UpMailServer acts like a Content-Security and AntiVirus Software for your Corporate 1st UpMailServer. It scans and clean e-mails that:
- Flow between all the local users.
- Go from your 1st UpMailServer to the Internet.
- That comes into your 1st UpMailServer from the Internet (through SMTP or POP3).

MailScan 4 is the *only* product available in the world that works transparently on both SMTP and POP3 traffic.

It is the world's first real-time, e-mail Content-Security and AntiVirus software that analyzes e-mails on real time basis *before* they are delivered to your clients or servers. Both SMTP and POP3 are supported.

Technically, a new layer, called as the MicroWorld Winsock Layer (MWL), has been introduced between the default WinSock2 and the applications. This layer analyzes traffic that flows between 1st UpMailServer and the Internet or your applications.

AntiVirus and Content-Checking are some of the key benefits offered by MailScan. It also has a Generic Attachment Analyzer, an automatic compression and decompression feature, a comprehensive Notification Engine and many features, not available in other products.

MailScan uses eScan Content-Security and AntiVirus, to scan all e-mails attachments. Incoming and outgoing e-mails are scanned and cleaned for viruses and the contents checked, before the e-mail server processes them.

All MailScan processes are multi-threaded. This ensures that all e-mails are parallely processed.

All types of attachments are handled by MailScan, including MIME and UUEncoded. Other types supported are: RFC822 attachments, embedded e-mails, Multipart-Mixed and Multipart-Digest types.

The most important USPs offered by MailScan are that:
- No port settings or changes need to be done inside 1st UpMailServer.
- No dedicated Gateway machine is required for using MailScan. MailScan works with 1st UpMailServer on the same machine.

System Requirements:
- Pentium - 100 Processor and above
- 64-128 MB of Physical Ram
- 50 MB of free H/Disk Space