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Hi
Matt and Dave,
points
taken - thanks for the feedback!
bye
for now,
kg
I'll second that. I would also
make it the default behavior since many may experience issues and not be aware
of what exactly is going on resulting in lost E-mail and extra support.
I do not believe that changing the behavior is going to produce any ill
effects except for possibly a handful of people that desire some form of
branding, though this would be achieved by way of setting up unique hosts in
IMail.
I don't believe that what IMail does presently is technically
not RFC compliant, but it isn't desirable, and it is something that one would
want to avoid considering real-world short-sighted spam blocking/qualification
being used by both CBL and apparently
Brightmail.
Matt
Dave Doherty wrote:
Hi Kevin-
2.3.2 defines the "client" as the
sending host attempting to pass a message to an SMTP "server"
host:
"In RFC
821, the two hosts participating in an SMTP
transaction were
described as the
"SMTP-sender" and "SMTP-receiver". This
document
has been changed to reflect current industry
terminology and hence
refers to them as the "SMTP
client" (or sometimes just "the client")
and "SMTP
server" (or just "the server"), respectively...."
And 4.1.1.1, which you quoted,
defines the EHLO/HELO string:
"These
commands are used to identify the SMTP client to the SMTP
server. The argument field contains the fully-qualified domain
name
of the SMTP client if one is
available..."
I would suggest that the FQDN
of my IMail "client" is what I entered into the IMail
Administrator
applet as the Host Name, not
"mail.whatever_domain_is_trying_to_send.tld"
-d
----- Original Message -----
Sent:
Thursday, January 12, 2006 2:41 PM
Subject:
RE: [IMail Forum] Blacklisted by Imail "feature"
Hi Dave,
Excellent request.
We're digging into this some
more, trying to figure out a way to comply with the IETF standard
while also providing an "optional" feature to address this issue.
Certainly the messaging space has changed over the years (especially around spam, blacklists, etc.)
and some of the original standards can sometimes be dated or
restrictive.
Here's a snippet from RFC
2821:
4.1.1.1 Extended HELLO (EHLO) or HELLO (HELO)
"These commands are used to
identify the SMTP client to the SMTP
server. The
argument field contains the fully-qualified domain name
of
the SMTP client if one is available. In situations in which
the
SMTP client system does not have a meaningful domain
name (e.g., when
its address is dynamically allocated and
no reverse mapping record is
available), the
client SHOULD send an address literal (see section
4.1.3),
optionally followed by information that will help to
identify
the client system. y The SMTP server
identifies itself to the SMTP
client in the connection
greeting reply and in the response to this
command."
bye for now,
kg
It would
be good to make it optional.
Any chance of a
patch?
-----
Original Message -----
Sent:
Thursday, January 12, 2006 11:11 AM
Subject:
Re: [IMail Forum] Blacklisted by Imail "feature"
cannot be stopped at this time other
than assigning an IP address to each domain.
Eric S
-----
Original Message -----
Sent:
Thursday, January 12, 2006 10:52 AM
Subject:
Re: [IMail Forum] Blacklisted by Imail "feature"
Hi Eric-
I got CBL to whitelist us in
November and thought the problem was solved. Then it happened again
yesterday with Comcast, and it seems like a good idea to turn this
off as other admins get the idea that they can detect spammers this
way.
I looked in the archives and
couldn't find anything lately. If anybody knwos how to stop this,
please let me know.
-d
-----
Original Message -----
Sent:
Thursday, January 12, 2006 9:45 AM
Subject:
Re: [IMail Forum] Blacklisted by Imail "feature"
Check the archives. This was being
discussed over the last week or so. This comes up every once in a
while. Usually if you contact CBL they will permanently whitelist
you so you don't get listed again. The actual test is way to
restrictive which makes it just about invalid for those running
IMail and some other server packages which impersonate the virtual
domains in their HELO/EHLO strings.
Eric S
-----
Original Message -----
Sent:
Thursday, January 12, 2006 12:16 AM
Subject:
[IMail Forum] Blacklisted by Imail "feature"
Hi, all-
Running Imail 8.15 here,
but this applies to many other versions.
I have recently been
blacklisted by CBL and Comcast as a result of a feature that
appears to be unique to IMail. It seems that there is some way in
which, for outgoing mail, Imail identifies itself as "mail."
followed by whatever domain originates the email. Since I have
several hundred domains, that means the server identifies itself
as several hundred domains, all at one IP address. To uneducated
recipients, this looks like a spam generator.
Several other users on
the Declude list report similar problems.
Is there a way to shut
off this function so the server always identifies itself with
the official host name?
-Dave
Doherty
Skywaves,
Inc.
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