Order Confirmation problem

[e81ny]

This is quite urgent; I hope somebody has an answer for it:

Recently I finished a Zen Cart site for a client. When I placed an order, he received both PayPal payment notice and a order confirmation/notice email. But when my client tested and placed orders (three times, with different customer accounts opened with different email address), he only received PayPal notice but not Order Confirmation/Notice email.

What could be the problem??

Here is some background of this:
the first time he placed an order, he received an email as followed:

- I changed nothing except the email addresses (in red) -
-------------------------------------------
TITLE: Mail delivery failed: returning message to sender
Email content:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of
its recipients. The following addresses failed:

<XXXX AT sina DOT com>

SMTP error from remote server after MAIL command:
host freemx1.sinamail.##################.cn[202.108.3.242]:
553 Envelope sender <XXXX AT yahoo DOT com> rejected


--- The header of the original message is following. ---

Received: from infong228.perfora.net (infong228.lxa.perfora.net [74.208.16.225])
by mrelay.perfora.net (node=mrus0) with ESMTP (Nemesis)
id 0MKp8S-1Kn1F33Ik2-0001zC; Mon, 06 Oct 2008 21:20:02 -0400
Received: from 141.157.216.170 (IP may be forged by CGI script)
by infong228.perfora.net with HTTP
id 3oUqpM-1Kn1F334e8-0003tN; Mon, 06 Oct 2008 21:20:01 -0400
X-Sender-Info: <256358321 AT infong228 DOT perfora DOT net>
Precedence: bulk
To: XXXX AT sina DOT com
Subject: =?GB2312?B?tqm1pci3yM8gseC6xTE=?=
Date: Mon, 6 Oct 2008 21:20:01 -0400
From: store name <XXXX AT yahoo DOT com>
Reply-to: store name <XXXX AT yahoo DOT com>
Message-ID: <9faf4358a4351a3732b2bf9aeef45ba2 AT XXXXXX DOT com>
X-Priority: 3
X-Mailer: PHPMailer [version 1.73] via Zen Cart
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="GB2312"
X-Provags-ID: V01U2FsdGVkX1/X52UAbyvaKGA+xr3vRoCf8X7HlGbhS5rYB+q
OkqkX04LKRRy/VmuLpCIA7t+8r1I4v8t7OA5nF1phl1O11s4yB
qFZi6fWXR0=

----------------------------------------------

I don't know if this email has anything to do with the problem; I thought I would mention it in case if there's a link to the issue..

Thanks in advance for your help!

[e81ny]

Updates:

When last time my client opened a new customer account to test, he once again received the same email stating "Mail delivery failed: returning message to sender"..

One thought: does these have anything to do with the "Emails must send from known domain?" setting at E-Mail Options under Configurations??

[DrByte]

It seems like your mail system doesn't like the fact that you're trying to spoof the sender's email address, impersonating a yahoo account.
Use a real email account tied to your actual store's domain name instead.

[e81ny]

It seems like your mail system doesn't like the fact that you're trying to spoof the sender's email address, impersonating a yahoo account.
Use a real email account tied to your actual store's domain name instead.

My client used real email address when he was testing, the email addresses you see on my post (in red) are replaced by "XXXX" for privacy..

[DrByte]

From: store name <XXXX AT yahoo DOT com>

I'll be more direct. If using a "yahoo" address doesn't work, then use the real email address of a real account on the same domain name as your webstore.

ie: if your store's name is "abc.com", then use an email address that's "[email protected]"

[e81ny]

ie: if your store's name is "abc.com", then use an email address that's "[email protected]"

My client has already updated that before he tested for the second and third time.. still no order confirmation email..

The interesting thing was: when I placed a test order, he would get an order confirmation email. But when he placed an order himself, he didn't get order confirmation email..

[DrByte]

Maybe his mailserver doesn't like him sending mail to himself?

I would suspect these are questions that should be directed to the hosting company.

You might try enabling Email Archiving, and check to see that the emails being sent are the same as the content you're receiving, just so you know whether your mailserver is actually translating any content after Zen Cart hands it off to the mailserver. http://www.zen-cart.com/wiki/index.p...Email_Problems