Sorry to be so Stupid but how is it implemented ? blocking on the helo command alone ?
Md > That is a common trick with spammers. You could block just on the helo > command alone and catch a lot. I have blocked 554 on one gateway this > morning with that alone. > > DustyC > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] = > On > Behalf Of M.D. DeWar > Sent: Friday, September 12, 2003 10:32 AM > To: [EMAIL PROTECTED] > Subject: [IMGate] Re: my imgate IP in the HELO > > Heres another > Original ip is :: > Postfix SMTP server: errors from unknown[220.71.28.199] > > In: HELO 68.156.89.118 <<<<<<<<my IMGATE machine > Out: 250 spamcop.wirelesscommunitynetworks.com > In: MAIL FROM: <[EMAIL PROTECTED]> > Out: 250 Ok > In: RCPT TO: <[EMAIL PROTECTED]> > Out: 554 <68.156.89.118>: Helo command rejected: ACL = > helo_hostnames_regexp > HELO/EHLO hostname must not contain an IP address, HELO =3D = > 68.156.89.118 > > > >
