Maybe it's just me but ALL the IP's that use different HELO's are spam or
zombies.
Right. You and all the other admins who don't understand the RFCs, which is
the major problem here.
IMail and some other RFC-compliant servers greet the receiving server with a
HELO or EHLO string that describes the sending domain, not the FQDN of the
server.
I host about 500 domains on my IMail server. Theoretically, you could log
500 HELO/EHLO domains on the IP of the server.
So help me out here.
Where did you learn that "ALL the IP's that use different HELO's are spam or
zombies." Is this from personal experience, or from a blog or a security
consultant, or what?
-Dave Doherty
Skywaves, Inc.
----- Original Message -----
From: "John Beaver" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, January 31, 2006 9:04 PM
Subject: Re: [IMail Forum] Comcast "Liar Rule" SMTP HELO
Matrosity Hosting wrote:
You would still have a PTR though so you shouldn't be classified as
improperly configured if you have one. I think the Comcast issue is
really about the HELO response from an Imail server not the PTR.
Imail Admin wrote:
Is this really an "improperly configured mail server"? When configured
with multiple domain names on a single IP, IMail reports each domain
name in the SMTP handoff (e.g., "mail.mydomain.com"). This actually
makes sense to me, but I'm not an expert, so is it really a violation of
the RFCs? Or is it Comcast just being heavy-handed?
Maybe it's just me but ALL the IP's that use different HELO's are spam or
zombies. I use a threshold of 5 different HELO's froma single IP address
and I tag it as a spammer IP. Haven't hit a legitimate on yet. I'm on a
smaller server with less than 10 domains and I have over 100 currently
blacklisted for this.
john
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