On Fri, 2004-03-05 at 15:00, Jason Williams wrote: > I'm setting up a mail gateway server for our company that is going to have > the following: > > FreeBSD 4.9 > Sendmail 8.12.11 > Latest versionof MIMEDefang > > Sole purpose is to scan all incoming mails for the company, clean them, > then pass them off to the internal mail server. > > I wanted to know if there maybe any potential problems with this particular > setup? Anything I should be aware of before I begin testing and setting up. >
The only real problem is that if the outside gateway is unaware of legitimate user names it will accept everything, then when the inside mailer rejects the unknown users the outside box must construct and return the bounce message. If you are tagging spam instead of rejecting it and the company has many ex-employees that have their addresses on spam lists you can end up with a big outgoing queue of junk you are trying to return to unreachable addresses. The best solution here is probably to put the users in LDAP and configure the outside mailer to use it but I haven't done that myself yet. I just periodically grep the logs for the rejections and stick the frequent ones into sendmail's access list with a REJECT on the outside machine. --- Les Mikesell [EMAIL PROTECTED] _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
