*facepalms*

Well...how embarrassing! Ok..THAT problem is closer to being solved. So now a followup
: There is still one domain, ms[somenumber].hinet.net that courier still accepts and delivers email for. I have no idea who they are. I notice that the smptaccess files usually take IP addys, but can they also take named domains? In other words can I do:


*.hinet.net   deny

and have it work?

Thanks!
On Thursday, May 20, 2004, at 11:52 US/Pacific, David Newall wrote:

On Fri, 2004-05-21 at 01:18, Robert Horton wrote:
Quick question: If I set up SMTP so that users have to use a password
to send mail, would that end the flood of spammers attempting to use me
as a relay?

Sounds horribly like spammers are succeeding in using you as a relay! Courier, out of the box, doesn't relay mail. You have to add an entry to (a file in) smtpaccess, specifying the IP addresses that are allowed to use you as a relay, for example

  a.b.c/n    allow,RELAYCLIENT

Hope you haven't got RELAYCLIENT for all addresses!

If you /have/ to allow relaying from any address, perhaps because you
have roaming users, then you posilutely must require authentication!
Absotively!



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