sendmail

[Marti, Rob]

You're connecting from somewhere other than gmail.com and saying the mail is coming from gmail.com.  You're trying to relay mail without authenticating, which I would bet google has disabled.  Your MTA A is currently set up as an open relay (unless you're at gmail.com).  Read
http://en.wikipedia.org/wiki/Open_mail_relay to see why this is bad.

Rob Marti

-----Original Message-----
From: redhat-list-bounces at redhat.com [mailto:redhat-list-bounces at redhat.com] On Behalf Of Joy Methew
Sent: Wednesday, September 03, 2008 9:11 AM
To: General Red Hat Linux discussion list
Subject: sendmail

here is two systems both are "mta" A and B with sendmail.
A is mine and B is gmail mat.
when i telnet my mta means A --->>telnet 127.0.0.1 25
helo hi
mail from:root at yahoo.com <from%3Aroot at yahoo.com>
rcpt to:ml4joy at gmail.com <to%3Aml4joy at gmail.com>
i recived mail very easly.
it means my mta "A" telnet indirectaly to gmail mta.
but when i try to telnet directly to gmail mta its give error like.


220 mx.google.com ESMTP t26si1434066ele.4
helo gmail.com
250 mx.google.com at your service
mail from:ml4joy at gmail.com <from%3Aml4joy at gmail.com>
555 5.5.2 Syntax error t26si1434066ele.4

Any idea why the "Syntax error".?

Thanks
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