On Tuesday 09 December 2003 06:15, cour...@pro-technica.com wrote:
Courier does not like esmtp HELO/EHLO from internal smtp engines of
viruses/spammers, so spam will not be too much.
Hmmmm, if you're right then that would be great. I assume that you can turn
on this sort of reverse lookup if you want but I don't think it's on by
default.
[jeff@superman jeff]$ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 superman.ivb.sil.org ESMTP
helo big_fat_ugly_spammer
250 superman.ivb.sil.org Ok.
helo nothing@not.a.valid.domain
250 superman.ivb.sil.org Ok.
quit
221 Bye.
Connection closed by foreign host.
[jeff@superman jeff]$
And since I have lots of local users connecting to this machine to send mail
(using their machine name as the HELO) then I don't think I can turn this on
so I've never looked into it. But "out of the box" I think that courier
will accept mail for valid users from anywhere, which is why accepting mail
for ANY user seems like a bad idea to me. But hey, as my wife can tell you,
I'm wrong all the time, so let me know if I've misunderstood how all this
works! :-)
8 messages in net.sourceforge.lists.courier-users[courier-users] Re: Supressing 550 Us...
