IronPort - advanced configuration guide

2-64
Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
Chapter 2 Configuring Routing and Delivery Features
Note A listener checks the information in the altsrchost table and directs the email to a particular interface
after checking the masquerading information and before message filters are checked.
Importing an altsrchost File
altsrchost Limits
Username The system will match username syntax against the Envelope Sender address
up to the @ sign. The @ sign must be included. Example: username@
Domain The system will match domain name syntax against the Envelope Sender
address starting with the @ sign. The @ sign must be included. Example:
@example.com
Use these subcommands within the altsrchost command to create mappings in the Virtual Gateways
via the CLI:
Syntax Description
new Create a new mapping manually.
print Display the current list of mappings.
delete Remove one of the mappings from the table.
Like the HAT, the RAT, smtproutes, and masquerading and alias tables, you can modify altsrchost
entries by exporting and importing a file. Follow these steps:
Step 1 Use the export subcommand of the altsrchost command to export the existing entries to a file (whose
name you specify).
Step 2 Outside of the CLI, get the file. (See Appendix B, “Accessing the Appliance” for more information.)
Step 3 With a text editor, create new entries in the file. The order that rules appear in the altsrchost table is
important.
Step 4 Save the file and place it in the “altsrchost” directory for the interface so that it can be imported. (See
Appendix B, “Accessing the Appliance” for more information.)
Step 5 Use the import subcommand of altsrchost to import the edited file.
You can define up to 1,000 altsrchost entries.
OL-25137-01