On Sep 11, 2005, at 11:02 AM, Steve Williams wrote:
Jason Dixon wrote:
I'm using spamd with greylisting on a new Postfix mail proxy, but
it's behaving strangely for accepted connections. If I make a
connection to the server from my whitelisted (<spamd-white>)
external test server, I see the following:
[EMAIL PROTECTED] root]# telnet mail.domain.com 25
Trying x.x.x.x...
Connected to mail.domain.com (x.x.x.x).
Escape character is '^]'.
220 ******************************
EHLO mail.dixongroup.net
502 Error: command not implemented
QUIT
221 Bye
Connection closed by foreign host.
I get this type of "220" banner when I connect to my former work &
they had some Cisco email proxy type of hardware... it might have
been embedded in the PIX, I'm not 100% sure...
telnet mail.xxxxx.com smtp
220 *****************************200**0**00*2***0*00
Is there some CISCO hardware in the picture??
Yes, there is a PIX (eventually to be replaced with OpenBSD/PF), but
I don't understand how that could interfere. If I remove the
external system from <spamd-white>, I get redirected to spamd as
expected:
[EMAIL PROTECTED] jason]$ telnet mail.domain.com 25
Trying x.x.x.x...
Connected to mail.domain.com (x.x.x.x).
Escape character is '^]'.
220
******************************************************************0**2**
200*
HELO localhost
250 Hello, spam sender. Pleased to be wasting your time.
QUIT
221 mail.domain.com
Connection closed by foreign host.
I guess it's possible that PIX software might be munging the 220
(unlikely), but I still see the connections in my maillog, so it's
not intercepting the SMTP session.
--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net
