David,
I was thinking a bit and tried something, a telnet session, that tells us
more. Then I did some DNS checking, to see what I might find and that too,
is below.
Telenet session: (looks like a new version of Sendmail? Len, do you know??)
220 talbiz.com ESMTP Sendmail 8.8.8/8.8.5; Fri, 29 Dec 2000 13:57:29 -0500
ehlo test
250-talbiz.com Hello xxxx.ipswitch.com [156.21.x.y], pleased to meet you
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ONEX
250-ETRN
250-XUSR
250 HELP
mail from: <[EMAIL PROTECTED]>
250 <[EMAIL PROTECTED]>... Sender ok
rset
250 Reset state
mail from: [EMAIL PROTECTED]
553 [EMAIL PROTECTED] Access Denied:Spam not accepted
rset
250 Reset state
mail from: [EMAIL PROTECTED]
250 [EMAIL PROTECTED] Sender ok
This shows that the response is based upon the senders From: address, both
good (stat.com, mail.stat.com) and bad (idf.stat.com).
DNS data:
nameserver = mail.stat.com.
nameserver = ns1.crl.com.
nameserver = ns2.crl.com.
nameserver = cyclops.net-foundry.com.
nameserver = ns2.cairns.com.
207.211.1.10
50, b.mx.crl.com.
10, mail.stat.com.
20, idf.stat.com.
30, mail.hethmon.com.
40, a.mx.crl.com.
mail.stat.com.
207.211.1.10
10.1.211.207.in-addr.arpa.
host = stat.com.
idf.stat.com.
207.211.1.100
100.1.211.207.in-addr.arpa.
host = idf.stat.com.
I did not check any delegation or any of your DNS servers. I used mine and
this is what it returned.
Your IMail server:
207.211.1.100 (2nd highest MX)
220 X1 NT-ESMTP Server idf.stat.com (IMail 6.05 207-1)
Other Mail servers:
207.211.1.10 (from MX record for mail.stat.com)
No answer - Not good, as this is the highest priority MX record (unless that
host is currently down or you are in a 'transition' of some kind).
I did not check any lower priority MX hosts!
Summary:
Looks like they are only rejecting the idf.stat.com host and accepting
stat.com. Not sure why. Both have what appear to be PTR records, so that
would not seem to be the problem (and not the usual Sendmail response for
that problem - 'domain must resolve'). Looks like it is a specific hostname
block, to me. Or if this is a new version of Sendmail, some 'new'
configuration (just a guess, but 'feels' like one, to me - AOL uses Sendmail
servers, too)?
Check your logs some more for problems of this nature but to other domains
(try searching on the sendmail response 'spam not accepted' or the '553'.
Are they all to Sendmail servers? Are they also of this version? Do you see
other, earlier versions of Sendmail servers accepting this lists email?
WorkAround:
You could comtemplate changing the 'Official Host Name' of the domain now
named idf.stat.com, as a 'workaround'. But before you do, are there any
other domains, in IMail, that have 'stat.com' in or as part the 'OHN'?
Probably should also know the primary IP address and Host and Domain names
(TCPIP settings), for this computer. Good idea to check (include a copy) the
HOSTS file (it will need modification), too. Oh, and just to be safe,
backups of the IMail registry branch (disk data too, if you are a
'worrier'). Without knowing your exact current configuration I would
recommend the backups. But in reality, can probably make the needed changes
in just a few minutes, with very small risks (it been done before, lots of
times, just have to do it RIGHT the first time!). Several KB articles and
the archive can give you more info, so I don't have to type it here.
Daniel Donnelly
_______________________________________________________
----- Original Message -----
From: "Daniel Donnelly" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, December 29, 2000 10:01 AM
Subject: Re: [IMail Forum] Mail from Mailing lists being rejected.
> David,
>
> Not that I know about. I believe it is built into the code that generates
> the email message headers.
>
> Daniel Donnelly
> _______________________________________________________
>
> >message. The field and data is: 'Precedence: bulk' and some SMTP
receivers
> >might check this and refuse the message.
>
> Dan, I'll have to dig into the logs more, but if this above is the
> case, is there a way to turn that off in a registry entry, or is that
> built-in to the imailserv function?
>
> David
>
> ----- Original Message -----
> From: "Daniel Donnelly" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, December 28, 2000 5:51 PM
> Subject: Re: [IMail Forum] Mail from Mailing lists being rejected.
>
>
> > David,
> >
> > A List Server message has a slightly different header than a users email
> > message. The field and data is: 'Precedence: bulk' and some SMTP
receivers
> > might check this and refuse the message.
> > 'Unknown User' responses (from the remote end) usually come before any
> > header info is transmitted (and the error message comes from the local
> > Postmaster). 'Failed after X tries' responses (from the local
postmaster)
> > usually mean that DNS information is available (or error msg would have
> been
> > 'unknown domain'), but IMail could not connect to the host, or
connected,
> > but could not deliver (connection refused by remote, or connection
dropped
> > before full delivery).
> >
> > Email to large sites, may have multiple MX hosts and they may not all be
> > running the same software or configured the same, so it is possible that
> one
> > email will go one route and another email, a different route, leading to
> > this 'some do, some don't' kind of symptom.
> >
> > Client side 'rules/filters' could also lead to different responses for
> > different message sources, subjects, headers and such.
> >
> > Really need logs and actual 'bounced' email, to know what is happening
in
> > each situation.
> >
> > Daniel Donnelly
> > _______________________________________________________
> >
> > ----- Original Message -----
> > From: "David Dodell" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Thursday, December 28, 2000 1:25 PM
> > Subject: [IMail Forum] Mail from Mailing lists being rejected.
> >
> >
> > > Hi, I've noticed a problem with certain addresses ( no pattern yet)
> > > ... that mail sent that originates from a mailing list on my Imail
> > > server will bounce back to the owner address with either "user
unknown"
> > > or "mail undeliverable" ... but if I send a single email message
> > > myself, I can watch the server deliver it without any problem.
> > >
> > > Why would mail become undeliverable from a list originated message but
> > > not an individual user?
> > >
> > > David Dodell
> > >
> > >
> > > Please visit http://www.ipswitch.com/support/mailing-lists.html
> > > to be removed from this list.
> > >
> > > An Archive of this list is available at:
> > > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
> > >
> >
> >
> > Please visit http://www.ipswitch.com/support/mailing-lists.html
> > to be removed from this list.
> >
> > An Archive of this list is available at:
> > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
> >
>
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
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