[ringzero] Re: (OT) Apache Named Virtual Hosting question
- From: Robert C Wittig <wittig.robert@xxxxxxxxxxxxx>
- To: ringzero@xxxxxxxxxxxxx
- Date: Sat, 03 Feb 2007 06:18:21 -0600
Godwin Stewart wrote:
> It's almost certainly because your machine is identifying itself
> incorrectly, pretty much the same way a machine taken over by a spammer
> would.
>
> Upon connecting to a remote server, your machine is sending back this
> string:
>
> EHLO ?192.168.1.3?
>
> This is invalid. The EHLO string must be a fully-qualified domain name
> resolveable in DNS or an address literal (enclosed in square brackets,
> not question marks), and that address should be your public IP address,
> not a private address.
>
> Fix that and filters like SpamAssassin etc. will be less prone to flag
> your mail as spam.
>
Ok... I checked one of my emails, and this is what I read for that line...
Received: from unknown (HELO ?192.168.1.3?)
(wittig.robert@xxxxxxxxxxxxx@70.142.248.62 with plain)
by smtp107.sbc.mail.re2.yahoo.com with SMTP; 3 Feb 2007 11:37:16 -0000
Now... parsing this...
192.168.1.3 is the private IP address for my Red Hat Enterprise Desktop
machine... the one I am sitting at, typing this, and from which I will
send this email, when I post it.
70.142.248.62 is the IP address on the public side of my gateway router,
that NAT uses for all the Desktop machines on my LAN.
wittig.robert@xxxxxxxxxxxxx is the SMTP that I send my outgoing Desktop
email to.
...and my emails are plain-text... and the rest of the line...
by smtp107.sbc.mail.re2.yahoo.com with SMTP; 3 Feb 2007 11:37:16 -0000
...would, therefore, be contain the FQDN of the SMTP server.
That is the SBC-Yahoo server that I use for most all of my email,
because that is how my ATT-SBC-Yahoo DSL ISP prefers that I send email.
I think this is a correct parsing of the line, and that the line should
be valid, but if I am wrong, I would of course be interested in knowing
what I should do to correct it.
My robertwittig.com and robertwittig.com sendmail servers are
functional, and do send me outgoing email... my logs, insecurity
reports, etc... on a daily basis... but I do not bother using either for
relaying my personal email, because ATT-SBC DSL has port-blocking on
the standard SMTP port 25, and I did not feel like changing the port
number just to defeat the ISP's countermeasure... particularly because I
was an extreme newbie (and still am, but less-so, by about a year)...
and felt like playing it safe, where the possibility of having my
mailservers used as spam relays was concerned.
I just ran all my static IP's (I lease 5 from ATT) through SpamCop (I do
this every so often) ...and, as always... they all came up clean.
--
You are receiving this message as part of your subscription to the
"ringzero" mailing list at freelists.org. To unsubscribe, send an e-mail
to ringzero-request@xxxxxxxxxxxxx?subject=unsubscribe
Other related posts:
