The SMTP Routing feature allows you to redirect messages based on the recipient address.
A list of routing rules is displayed:

Field |
Description |
Source |
This column shows the original recipient. |
Destination |
This column shows where the message will be redirected. |
Hostname |
This column shows a name of the server that messages will be forwarded through. |
Add |
Click the button to add a new routing rule. The Route dialog opens. |
Edit |
Select a rule and click the button to edit this rule. The Route dialog opens. |
Delete |
Select a rule and click the button to remove this rule. |
Arrows |
Select a rule and use these buttons to move it in the list up or down. |
Edit File |
Click the button to edit rules in the redirect.dat file. To reveal examples, click the Comments button here. |

Field |
Description |
Source |
The email address or domain which should be replaced and redirected. You can use the '...' button to select accounts, domains or groups through the Select Item dialog. |
Destination |
The email address or domain by which the source one is replaced and redirected. You can use the '...' button to select accounts, domains or groups through the Select Item dialog. Syntax: emailaddress | domain You can use two variables in this field: %%alias%% and %%domain%%. E.g. %%alias%%@%%domain%%. |
Hostname |
A hostname, with an optional port, that will be used for extended routing, using the following syntax: @hostname#port:alias@domain Example: aol.com=@relay.isp.com#2525:%%Recipient_Alias%%@icewarpdemo.com This says that all messages for anyone@aol.com will be routed to relay.isp.com. Authentication with a full email address example: username@domain:password@host |
Match sender instead of recipient (Sender is Source) |
Check this box if you want to use routing for senders instead of recipients. In this case, fill in the sender's email address into the Source field. |
Sender must be authenticated |
Check this box and all senders of messages processed by this routing must be properly authenticated. |
Local sender only |
Check this box and routing will be performed only for local senders. |
Local recipients only |
Check this box and routing will be performed only for local recipients. |
Skip rules |
Check this box and rules will not be processed for routed messages. |