Graymail refers to solicited bulk email messages that are not
spam. IMSS detects marketing messages and newsletters and
social network notifications as graymail. IMSS identifies
graymail messages in two ways:
- Email Reputation Services scoring the source IP address
- Trend Micro Antispam Engine identifying message content
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NoteNote that while IMSS detects these kinds of email
messages, these messages are not tagged as spam.
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Administrators define the rule criteria to take an action on those email messages.
Every
graymail message rule has an exception list containing address objects that bypass
message
filtering. An address object is a single IP address or address range (IPv4 or IPv6),
or the
Classless Inter-Domain Routing (CIDR) block.
Administrators have several options to understand graymail message traffic in the
network.
Reports illustrate the highest senders and recipients of graymail messages from external
or
internal sources. Administrators can also query detailed log information or view the
email
quarantine and release messages identified as permitted graymail messages when necessary.
The graymail exception list can be exported and imported.
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Note Ensure that IMSS can query external DNS servers for
graymail scanning. If you change any DNS server settings, restart the scanner server
to load the
new settings.
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