User's Manual
Table Of Contents
- Contents
- About This Guide
- 3Com Email Firewall Overview
- Configuring Mail Delivery
- Configuring Mail Security
- Anti-Spam Configuration
- Reporting
- System Configuration
- System Management
- Monitoring Activity And Status
- Customizing System Messages
- Reset to Factory Default Settings from Console
- Third Party Copyright and License Agreements
- Glossary
SMTP Security
43
Specific Site Policy
This option supports the specification of exceptions to the default
settings for SSL/TLS. For example, you may need to exempt a mail server
from using SSL/TLS because of lack of TLS support.
To exempt a system, specify the IP Address or FQDN (Fully Qualified
Domain Name) of the remote mail server in the
Add/Update Site
field.
Select Don't Use TLS from the dropdown box and click the Update
button. The exempted mail server will be listed under the
Specific Site
Policy
.
TLS options include the following:
■ Don't Use TLS — TLS Mail Delivery is never used with the specified
system.
■ May Use TLS — Use TLS if the specified system supports it.
■ Enforce TLS — Deliver to the specified system only if a TLS connection
with a valid CA-signed certificate can be established.
■ Loose TLS — Similar to
Enforce TLS
but will accept a mismatch
between the specified server name and the Common Name in the
certificate
See “SSL Certificates” on page 94 for more information on installing
certificates.