Installation instructions

2  About GFI MailSecurity GFI MailSecurity for Exchange/SMTP
viruses can spread so quickly and cause immense damage, it is best
to quarantine such emails before they are distributed to your email
users. When GFI MailSecurity quarantines an email, the administrator
can review it and then delete or approve the message.
Furthermore, you might choose to quarantine mails carrying *.mp3 or
*.mpg files, as these hog bandwidth and can needlessly burden a mail
server's disk space.
The Attachment Checking module has effectively saved thousands of
companies from the LoveLetter virus.
Trojan and Executable Scanner
GFI MailSecurity is able to analyze incoming executables and rate the
risk-level of an executable through a GFI patented process. Through
the Trojan and Executable Scanner, GFI MailSecurity can detect and
block potentially dangerous and unknown Trojans before they enter
your network.
HTML Sanitizer
The advent of HTML email has made it possible for hackers/virus
writers to trigger commands by embedding them in HTML mail. GFI
MailSecurity scans the email body parts and any .htm/.html
attachments for scripting code, and cleans up the HTML by removing
all the scripting code. The HTML Sanitizer thus protects you from
potentially malicious HTML email, containing HTML viruses and
attacks launched via HTML email.
Decompression filter
The decompression filter is used to decompress and analyze
compressed files (archives) attached to emails. This filter is able to
check for and block password-protected archives, corrupted archives
and recursive archives. Furthermore, this engine can also monitor the
size and amount of the files included in an archive. You can configure
this filter to quarantine or delete archives that exceed the specified file
count or file size.
GFI MailSecurity components
GFI MailSecurity scan engine
The GFI MailSecurity scan engine analyzes the content of all inbound
and outbound email. If you install GFI MailSecurity on the Microsoft
Exchange machine, it will also scan the information store. If installed
on a Microsoft Exchange 2007 machine, GFI MailSecurity will scan
the information store only if the Mailbox Server Role is installed. If you
install GFI MailSecurity on a Microsoft Exchange 2007 machine with
the Hub Transport Server Role, it will also analyze internal email.
When GFI MailSecurity quarantines an email, it informs the
appropriate supervisor/administrator via Email/RSS feed, depending
on the options you configure.
GFI MailSecurity configuration
Through the GFI MailSecurity configuration, you can configure GFI
MailSecurity to fit your needs.