I manage the mail system in my company. Every day I receive several emails like this:
=============================================
The original message was received at Thu, 16 Jun 2005 11:21:51 GMT
from root.mydomain.com [xxx.xxx.xxx.xxx]
----- The following addresses had permanent fatal errors -----
<
[email protected]>
(reason: 550 5.1.1 <
[email protected]>... User unknown)
----- Transcript of session follows -----
... while talking to imbomr-nj02.nj.ssmb.com.:
>>>>>> DATA
<<< 550 5.1.1 <
[email protected]>... User unknown
550 5.1.1 <
[email protected]>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)
Reporting-MTA: dns; imbaspam-ss04.namdmz.dmzroot.net
Received-From-MTA: DNS; root.mydomain.com
Arrival-Date: Thu, 16 Jun 2005 11:21:51 GMT
Final-Recipient: RFC822;
[email protected]
Action: failed
Status: 5.1.1
Remote-MTA: DNS; imbomr-nj02.nj.ssmb.com
Diagnostic-Code: SMTP; 550 5.1.1 <
[email protected]>... User unknown
Last-Attempt-Date: Thu, 16 Jun 2005 11:21:57 GMT
=============================================
I realized that some employees subscribed to a online service in Citibank and they receive every day an email with news and information. This mail comes from the invalid address
[email protected] (actually the message body warns about not answering to this invalid address) and it requests a delivery confirmation that is sent - of course - to this invalid account, causing the last error message.
I've been asking for more than one year to Citibank IT people here in Colombia to remove the delivery confirmation but they say that they have no problem with this issue, and that this problem have to be solved on my side. They say they receive the delivery confirmation OK but they have not told me to what email account.
I've wondering how can somebody be so dumb to ask a delivery confirmation of a message sent from an unmonitored account, but after a year I'm starting to doubt if it is possible that the problem be on my side.
Have somebody some idea or have ever heard of similar cases?? Citibank says that I'm the only one complaining about this.
Thanks in advance
Carlos Aguilar