This option allows you to explicitly remove any mail headers
from mail being distributed to the mailing list. You can also remove headers
that Lyris inserts.
For example, if you do not want the
"Precedence: bulk" header to be included in mail distributed to your
list (Lyris adds it by default), you can enter "precedence" in the
"Remove Headers" field.
If you want to remove multiple
headers, you can as many as you like, by separating each header to remove with
a carriage return. For example:
Precedence
Organization
Comments
X-Lyris-MessageID
Lyris will search in a case-insensitive manner for the
headers you specify. If any of the headers you specify to remove are found,
they are automatically removed.