Re: Cannot Receive Some Emails
From: N. Miller (nsm_at_blackhole.aosake.net)
Date: 02/04/04
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Date: Tue, 3 Feb 2004 23:34:14 -0800
In article <#Te6jqr6DHA.2576@TK2MSFTNGP11.phx.gbl>, jogor@bigpond.net.au
says...
> I am having to me what is a peculiar problem.
>
> I am a member of the local Senior Group here and when the Newsletter is sent
> out, it is returned undelivered to the sender, this occurs if he sends it
> through OE, but if he sends it through Netscape then it comes through OK.
>
> Out of about 600 members, this is only happening to about 8 of us. For
> information I have attached an email I received from the coordinator today.
>
> Joe,
>
> Just for the hell of it, I tried to send you a test message vie OE on my own
> PC rather than the LTS laptop. It, too, was returned with an error 550
> recipient unknown message. However there are no problems sending with
> Netscape. There has to be something in the difference in the way that the
> two programs encode the email. The sender's address (dsmitch@trump.net.au vs
> linkingseniors@bigpond.com) obviously doesn't have any bearing.
> Screwy :-(
>
>
> I have contacted my ISP and they say there is no problem.
>
> Can anyone assist please?
Yes and no. As you guessed, there is a difference in the way that MS Outlook
Express and Netscape Mail encodes the SMTP messages; as shown below:
Using the MS Outlook Express 6 MUA:
> Received: from unknown (HELO megumi) (...%pacbell.net@67.116.51.103 with login)
Added by MSOE ^^^^^^^^^^^^^^^^^
> by smtp810.mail.sc5.yahoo.com with SMTP; 4 Feb 2004 06:56:07 -0000
> Message-ID: <000901c3eaeb$eaefbce0$6466a8c0@aosake.net>
> Date: Tue, 3 Feb 2004 22:55:42 -0800
> X-Mailer: Microsoft Outlook Express 6.00.2800.1158
> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Using the Netscape MUA:
> Received: from unknown (HELO pacbell.net) (...%pacbell.net@67.116.51.103 with plain)
Added by Netscape ^^^^^^^^^^^^^^^^^^^^^^
> by smtp804.mail.sc5.yahoo.com with SMTP; 4 Feb 2004 06:51:08 -0000
> Message-ID: <40209649.9010303@pacbell.net>
> Date: Tue, 03 Feb 2004 22:50:49 -0800
> User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
If "smtp8xx.mail.sc5.yahoo.com" was expecting the HELO string to match a
'legal' (for the domain; yahoo.com in this case) FQDN, then it would reject
the first case because 'megumi' is not a legal FQDN.
It might reject the second case because 'pacbell.net' != 'yahoo.com';
however, SBC has a contract with Yahoo! for yahoo.com servers to handle SBC
customer email. Pacbell.net is a legal SBC domain, so it shouldn't be
rejected by the yahoo.com server.
I don't really see why your ISP mail server would behave like that, but you
might want do try using a troubleshooting log and post the results, or show
them to your ISP; or both.
First go to Tools > Options, the "Maintenance" tab, and put a check mark in
the box near the bottom labeled, "Mail". Now, send a message using the email
addresses which fail. After the failure, reset the "Maintenance" menu to
clear boxes.
You should find a file in the same folder as the .dbx folders. Look for
"smtp.log". It should show the SMTP transaction in detail; something like
this:
SMTP: 23:18:40 [rx] 220-aosake.net ESMTP server ready.
SMTP: 23:18:40 [rx] 220-<SMTP server banner>.
SMTP: 23:18:40 [tx] HELO megumi
SMTP: 23:18:40 [rx] 250 aosake.net Hello, megumi.
SMTP: 23:18:40 [tx] MAIL FROM: <email address>
SMTP: 23:18:40 [rx] 250 Sender OK - send RCPTs.
SMTP: 23:18:40 [tx] RCPT TO: <email address>
SMTP: 23:18:40 [rx] 553 We do not relay without RFC2554 authentication.
SMTP: 23:18:40 [tx] QUIT
SMTP: 23:18:40 [rx] 221 aosake.net Service closing channel.
I'd like to see what you get, just to see why the error happens.
-- Norman ~Win dain a lotica, En vai tu ri, Si lo ta ~Fin dein a loluca, En dragu a sei lain ~Vi fa-ru les shutai am, En riga-lint
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