(optional) Defines whether to allow Visitors on your mailing
list. Allowing Visitors means that the Lyris Web Interface will allow
non-members to Read and Search the past discussions on your mailing list. They will
also be able to Get Info about your mailing list. A Visitor cannot contribute
to a mailing list, and cannot receive mailing list contributions via email.
Allowing Visitors is often a good
way for prospective member to get a taste of what a mailing list is about. They
will be able to read past postings to see if the mailing list interests them.
If it does, they can apply for membership.
Allowing Visitors is also useful
for specialized mailing lists, where the information is not confidential, but
you do not want just anyone joining. For example, a mailing list discussing
Internal Telecommunications standards would want outsiders to be able to read
the discussion, but you may want the mailing list to be Private, so that
only members of the standards committee can belong to the group.