# Take Action on E-mail Based on Headers in Hermes SEG

Creating message rules to take actions based on e-mail headers is not yet implemented in the Hermes SEG Web GUI. However, this can be accomplished in the command line fairly easily. In the example below, we will redirect e-mail destined for an e-mail address to another e-mail address of our choice using the **To:** header.

Login to Hermes SEG appliance via console or SSH and edit the following file:

```
sudo vi /etc/postfix/regexp_header_checks
```

Add the following line at the end of the file where **<someone@domain.tld>** is the original e-mail destination and **<someoneelse@otherdomain.tld>** is the e-mail address we wish to redirect the e-mail:

```
/^To: .someone@domaint.ld/ REDIRECT someoneelse@otherdomain.tld
```

Save the file and reload postfix:

```
postfix reload
```