Jiju Thomas Mathew saw fit to inform me that: >safe way is to create such an alias and pipe any mail to the alias >through a script, verify the origin for validity, do no response to the >invalid, re inject the mail to valid all users. I ~did~ suggest using procmail to filter these, but having such an alias is dangerous as it renders your box open to various other hacks. In fact, the feature (LUSER RELAY) (for a systemwide alias) was there by default till 8.9.2 (and even some early builds of 8.9.3, and is what VSNL uses for its notorious allusers@server mail id. Sendmail has disabled this by default (and in fact, removed this feature I believe) from 8.9.3 onwards (the one which ships with RH 6.1 doesn't have this feature enabled, or even listed in sendmail.mc). A ~much~ better option is to compile a small mailing list manager like smartlist (procmail based) <=> remember to install a plugin called "confirm" so that every tom, dick and harry can't post to your list. If its just an announcement list, several pop3 servers like popper and qpopper have something called a "pop3 bulletin", where a mail can be appended to each user's inbox as soon as he polls the pop3 server. This is the least resource intensive way to run an announcement list. If you are sure your users are all on pop3, and none on a shell acct / imap etc, then go for it. -- Suresh Ramasubramanian | President, CAUCE India [EMAIL PROTECTED] | [EMAIL PROTECTED] http://www.india.cauce.org | Stopping Spam In India -- A modem is a baudy house. ----------------------------------------------------------------------- For more information on the LIH mailing list see: http://lists.linux-india.org/lists/LIH
