| === HasHeaderWithPrefix | |
| Matches emails with headers having a given prefix. | |
| If a header with the given prefix is found in the message (global) all recipients will be matched. | |
| If a header with the given prefix is found per recipient (specific), only these will be matched. | |
| Otherwise, no recipient in returned. | |
| use: | |
| .... | |
| <mailet match="HasHeaderWithPrefix=PREFIX" class="..." /> | |
| .... |