Advanced Smtp Settings - Symantec 10490452 - Mail Security 8220 Administration Manual

Advanced SMTP settings

Use the MTA Configuration portion of the page to specify the MTA host name.
The MTA Host Name gives you the ability to define the Hello banner during the
initial portion of the SMTP conversation.
Use the following advanced inbound SMTP settings to further define your SMTP
configuration:
Table 2-1 Inbound SMTP advanced setting descriptions
Item
Maximum number of
connections
Maximum number of
connections from a single
IP address
Maximum message size in
bytes
Maximum number of
recipients per message
Insert RECEIVED header
to inbound messages
Enable reverse DNS
lookup
Use the following advanced outbound SMTP settings to define further your
SMTP configuration:
Table 2-2 Outbound SMTP advanced setting descriptions
Item Description
Maximum number Sets the maximum number of permissible simultaneous outbound
of connections connections. Additional attempted connections are rejected. The
default is 2,000 connections.
Description
Sets the maximum number of simultaneous inbound
connections allowed. Additional attempted connections are
rejected. The default is 2,000 connections.
Sets the maximum number of simultaneous inbound
connections allowed from a single IP address. Additional
connections for the same IP address will be rejected. The
default is 20. You can also limit the number of connections
from a single IP address per time period. Click Policies >
Attacks in the Control Center.
Sets the maximum size of a message before it is rejected. The
default is 10,485,760 bytes.
Sets the maximum number of recipients for a message. The
default is 1,024 recipients.
Places a RECEIVED header in the message during inbound
SMTP processing.
Causes the system to perform reverse DNS lookup on the
SMTP client IP addresses to resolve the IP address to a name
when checked. This is the default condition. When
unchecked, reverse DNS lookup is not performed for inbound
messages.
Configuring system settings
Configuring host (Scanner) settings
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