Symantec 11105111 User Guide - Page 136

To con external relay restrictions

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136 Setting your filtering policy Preventing relaying To configure external relay restrictions 1 On the Symantec Mail Security for SMTP administrative interface, in the left pane, click Filtering Policy. 2 In the Anti-Relay window, select one of the following: ■ Allow ■ Do not allow, except for listed hosts (one per line) 3 If desired, type one host name, IP address, or domain per line for mail servers from which email will be allowed. Domain name entries in this box will work only if the hosts have appropriate PTR records. You can use the * wildcard character as the first element of a domain name or the last element of an IP address to specify allowed hosts. For example: *.someplace.com 1.2.3.* 1.2.* 1.* If Do not allow is selected, and no hosts are listed, Symantec Mail Security for SMTP rejects all email with a non-local destination. 4 Click Save Changes.

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136
Setting your filtering policy
Preventing relaying
To configure external relay restrictions
1
On the Symantec Mail Security for SMTP administrative interface, in the
left pane, click
Filtering Policy
.
2
In the Anti-Relay window, select one of the following:
■
Allow
■
Do not allow, except for listed hosts (one per line)
3
If desired, type one host name, IP address, or domain per line for mail
servers from which email will be allowed.
Domain name entries in this box will work only if the hosts have
appropriate PTR records.
You can use the * wildcard character as the first element of a domain name
or the last element of an IP address to specify allowed hosts. For example:
*.someplace.com
1.2.3.*
1.2.*
1.*
If Do not allow is selected, and no hosts are listed, Symantec Mail Security
for SMTP rejects all email with a non-local destination.
4
Click
Save Changes
.