On the relatively small [850 subscribers] list Travel-L, I have set
Renewal= 4-monthly  to roughly match an academic year cut up Sep-Dec,
Jan-Apr, May-Aug.  If I set a problem account to nomail, at worst it
will clutter up the subscriber list for 4 months.  Perhaps this is
wasteful of the disk resources used for the list, but I see a lot of
transient errors that are, and "host unknown" that becomes "known" again
within a few weeks.  Having renewal/confirmation 3 times a year, plus
the monitoring report and auto-delete has made my life as an owner/manager
much, much easier.  However, my experience running travel-L has only been
about 1 year so I have a lot to learn--like how to find a replacement :-)
*---------------------------------+-----------------------------------*
|  James A. Schaefer, Assoc. Prof | Internet:  [log in to unmask] |
|  Math & Computer Science Dept   |                                   |
|  Rhode Island College           | Phone:  401 456-9758  / 456-8038  |
|  Providence, RI 02908-1991      | FAX:    401-456-8379              |
|        List Manager of Travel-L @ VM.ege.edu.tr                     |
*---------------------------------------------------------------------*