A mailing list is the name of a single recipient that, when expanded by sendmail aliasing, becomes a list of many recipients. Mailing lists can be internal (in which all recipients are listed in the aliases file), external (in which all recipients are listed in external files), or a combination of the two. The list of recipients that forms a mailing list can include users, programs, and files.
There is one new addition to mailing lists, but it is not covered until Chapter 23:
Extend the use of LDAP to include aliases files so that LDAP recursion can be used to automate mailing list creation via LDAP queries (Section 23.1.2 [V8.13]).
Here, we cover a few of the do’s and don’ts of mailing list management that were omitted from the third edition.
Managing your own mailing lists can become tricky, especially in light of the recent explosion of spam email and the effort and cost of fighting it. In this section, we cover positive behaviors associated with mailing lists that will help you avoid being labeled a spam emailer.
Clearly indicate subscription and management information
Keep messages small
Don’t use the
Cc: headers to create lists
Let software do the job for you
Boot members who send spam email
Before we begin, however, we need to mention the difference between an “open list” and a “closed list.” An open list allows anyone interested in it to subscribe through some (usually) automatic process. ...