> If you want to avoid spam you should block:
> 1) Messages from IP addresses without reverse DNS records.
> 2) Messages that don't have the list address either in To: or in Cc:
> No sane person will "blind copy" to the list.

Just tell me what to add to sendmail.  I sadly do not have time to do
any sysadmin of the nuclecu.unam.mx sites anymore.  I could move the
lists to Helix Code though.

Any objections?

Miguel.

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