Dear Chebucto Community Net, 

It is a urgent problem, I found there are countless such emails (please see below) sent to my Chebucto account (taiji@chebucto.ca), since this afternoon 2pm, now it becomes every second receiving this email and have been hundreds of them.   

I just called Mr. Shahab Rowshan, he suggest me to send a screenshot and a sample of such email to you.  Would you please help to stop those email sending to my “taiji@chebucto.ca”?   

Now it has over 600 of those similar “undelivered final returned to sender” emails sent to my Chebucto inbox, and it is not stopping at all, still keeps coming.   While I have not used this “taiji@chebucto.ca” email for a long long time.  And have not sent any emails from this taiji@chebucto.ca account for a long time already.  

Look forward to you urgent help, please 🙏 🙏 

Yours
Yau-Sun Tong 
Halifax 
tel: (902) 443-5500 



Begin forwarded message:

From: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:07:59 PM ADT
To: taiji@chebucto.ca

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: E8D259AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:07:58 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:07:53 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:07 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: 321AD9AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:07:29 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:07:23 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:07 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: CB5E89AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:07:11 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:07:06 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:07 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: 2C7189AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:07:00 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:06:54 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:06 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: 7853F9AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:06:31 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:06:26 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:06 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: 897A29AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:06:09 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:06:04 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:05 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: EBC829AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:05:47 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:05:42 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:05 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: A54299AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:05:21 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:05:16 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:04 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: C01379AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:04:59 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown

From: "Y. Tong" <taiji@chebucto.ca>
Subject: Re: Undelivered Mail Returned to Sender
Date: July 4, 2020 at 9:04:54 PM ADT
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)


This is an automatic reply message:

Please note that I have changed my old “taiji@chebucto.ca” to my new email address:

taiji@eastlink.ca

Effective immediately.  Please update your address book, and resend your email to my - taiji@eastlink.ca

Thank you! 🙏


Best regards
Yau-Sun Tong 湯友新

Photo gallery & Expedition news:
http://photoart.chebucto.org/photonews.html
TaiJi (TaiChi) page:
http://chebucto.ca/~taiji
Halifax, Nova Scotia, Canada
————————————



On Jul 4, 2020, at 9:04 PM, Mail Delivery System <MAILER-DAEMON@chebucto.ns.ca> wrote:

This is the mail system at host ada.chebucto.ns.ca.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<MAILER-DAEMON@chebucto.ns.ca>: host ada.chebucto.ns.ca[public/lmtp] said:
   550-Mailbox unknown.  Either there is no mailbox associated with this
   550-name or you do not have authorization to see it. 550 5.1.1 User unknown
   (in reply to RCPT TO command)
Reporting-MTA: dns; ada.chebucto.ns.ca
X-Postfix-Queue-ID: BD46D9AD0F3D
X-Postfix-Sender: rfc822; taiji@chebucto.ca
Arrival-Date: Sat,  4 Jul 2020 21:04:30 -0300 (ADT)

Final-Recipient: rfc822; MAILER-DAEMON@chebucto.ns.ca
Original-Recipient: rfc822;MAILER-DAEMON@chebucto.ns.ca
Action: failed
Status: 5.1.1
Remote-MTA: dns; ada.chebucto.ns.ca
Diagnostic-Code: smtp; 550-Mailbox unknown.  Either there is no mailbox
   associated with this 550-name or you do not have authorization to see it.
   550 5.1.1 User unknown
Return-Path: <taiji@chebucto.ca>
Received: from localhost (localhost [127.0.0.1])
by ada.chebucto.ns.ca (Postfix) with ESMTP id BD46D9AD0F3D
for <MAILER-DAEMON@chebucto.ns.ca>; Sat,  4 Jul 2020 21:04:30 -0300 (ADT)
X-Virus-Scanned: Debian amavisd-new at chebucto.ns.ca
Received: from ada.chebucto.ns.ca ([IPv6:::1])
by localhost (ada.chebucto.ns.ca [IPv6:::1]) (amavisd-new, port 10024)
with ESMTP id mwpsC3j5Qsxa for <MAILER-DAEMON@chebucto.ns.ca>;
Sat,  4 Jul 2020 21:04:25 -0300 (ADT)
Received: from [192.168.0.3] (host-173-212-67-206.public.eastlink.ca [173.212.67.206])
(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by ada.chebucto.ns.ca (Postfix) with ESMTPSA
for <MAILER-DAEMON@chebucto.ns.ca>; Sat,  4 Jul 2020 21:04:25 -0300 (ADT)
From: "Y. Tong" <taiji@chebucto.ca>
Content-Type: multipart/alternative;
boundary="Apple-Mail=_FEE4CA80-9B59-4E88-843A-F6E9BE938006"
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.14\))
Subject: Re: Undelivered Mail Returned to Sender
Message-Id: <03966608-7A46-41D4-8FC7-6D883D14669D@chebucto.ca>
Date: Sat, 4 Jul 2020 21:04:24 -0300
References: <20200705000424.308D59AD0F49@ada.chebucto.ns.ca>
In-Reply-To: <20200705000424.308D59AD0F49@ada.chebucto.ns.ca>
To: MAILER-DAEMON@chebucto.ns.ca (Mail Delivery System)
X-Mailer: Apple Mail (2.3445.104.14)