I haven't used Exchange 2003 in a while, but are you testing this using telnet from within your network? I know some other mail systems I've used (Postfix) can allow only certain IP's or a local lan to send mail.
On Tue, Jul 6, 2010 at 11:49 AM, <gro...@beachcomp.com> wrote: > Hi all, > > Having one of those days. > Just noticed our exchange server doing something funky and wondered if I > was > missing something. > > Using an Exchange 2003 machine, and for some reason it's allowing local to > local e-mail remotely and w/o authentication. > > What am I missing here? > > Here's a telnet session from a REMOTE machine: > > 220 Server.Domain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.46 > 75 ready at Tue, 6 Jul 2010 14:35:41 -0400 > HELO > 250 Server.Domain.com Hello [208.00.00.99] > MAIL FROM:t...@domain.com > 250 2.1.0 t...@domain.com....sender OK > RCPT TO:t...@domain.com > DATA > 250 2.1.5 t...@domain.com > 354 Start mail input; end with <CRLF>.<CRLF> > TEST > . > 250 2.6.0 <serverox7nyekzgzuny00000...@server.domain.com> Queued mail for > delivery > > > 220 Server.Domain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.46 > 75 ready at Tue, 6 Jul 2010 14:42:21 -0400 > HELO > 250 Server.Domain.com Hello [208.00.00.99] > MAIL FROM:t...@domain.com > 250 2.1.0 t...@domain.com....sender OK > RCPT TO:t...@test.com <to%3at...@test.com> > 550 5.7.1 Unable to relay for t...@test.com > > > 220 Server.Domain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.46 > 75 ready at Tue, 6 Jul 2010 14:43:39 -0400 > HELO > 250 Server.Domain.com Hello [208.00.00.99] > MAIL FROM:t...@test.com <from%3at...@test.com> > 250 2.1.0 t...@test.com....sender OK > RCPT TO:t...@test.com <to%3at...@test.com> > 550 5.7.1 Unable to relay for t...@test.com > > > 220 Server.Domain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.46 > 75 ready at Tue, 6 Jul 2010 14:45:37 -0400 > HELO > 250 Server.Domain.com Hello [208.00.00.99] > MAIL FROM > 501 5.5.4 Unrecognized parameter > MAIL FROM:t...@test.com <from%3at...@test.com> > 250 2.1.0 t...@test.com....sender OK > RCPT TO:t...@domain.com > 250 2.1.5 t...@domain.com > DATA > 354 Start mail input; end with <CRLF>.<CRLF> > TEST > . > 250 2.6.0 <serverfraqbc8wsa1xv00000...@server.domain.com> Queued mail for > delivery > > > Thanks for your input. > > > > >
