they cannot send us a letter with an attachment from one of the postal addresses, can we add the postal address to the exceptions, if this is possible, please tell me how
At the moment we see the following error:
I m sorry to have to inform you that your message could not be delivered to one or more recipients, its 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
<>: host <>[ip] said:554 Security violation. Email Session ID: {<id>} (in reply to end of DATA command)