Undelivered Mail Returned to Sender

Undelivered Mail Returned to Sender

Hi,

one of my user is unable to send messages. He is getting message he cannot send.This is too much annoying to get this messages everyday. For better understanding see bellow


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. This is a permanent error.

 

invoices@suisat.com, ERROR_CODE :550, ERROR_CODE :permanent failure for one or more recipients (marc-antoine.baumgartner@suisat.com:blocked,nikola.milasevic@suisat.com:blocked,technical@suisat.com:blocked,invoices...)

 

technical@suisat.com, ERROR_CODE :550, ERROR_CODE :permanent failure for one or more recipients (marc-antoine.baumgartner@suisat.com:blocked,nikola.milasevic@suisat.com:blocked,technical@suisat.com:blocked,invoices...)

 

nikola.milasevic@suisat.com, ERROR_CODE :550, ERROR_CODE :permanent failure for one or more recipients (marc-antoine.baumgartner@suisat.com:blocked,nikola.milasevic@suisat.com:blocked,technical@suisat.com:blocked,invoices...)

 

marc-antoine.baumgartner@suisat.com, ERROR_CODE :550, ERROR_CODE :permanent failure for one or more recipients (marc-antoine.baumgartner@suisat.com:blocked,nikola.milasevic@suisat.com:blocked,technical@suisat.com:blocked,invoices...)