there is a problem in sending some mails to one user, some random mails sent normally to any recipient expect one user, which return a NDR as follow
Remote Server returned '554 5.2.0 STOREDRV.Deliver.Exception:ObjectNotFoundException.MapiExceptionNotFound; Failed to process message due to a permanent exception with message The process failed to get the correct properties. 16.55847:E1040000, 17.43559:000000002E010000000000000000000000000000, 20.52176:010F80880C00103100000000, 20.50032:010F80887C17000000000000, 0.35180:010F8088, 255.23226:75010000, 255.27962:02000000, 255.17082:0F010480, 0.21857:14000000, 4.21921:0F010480, 255.27962:FA000000, 255.1494:80030400, 0.44680:05000780, 8.45434:8DE63CC31F0C9E479A6B920D61D0A54800000000, 5.10786:0000000031352E30312E323137362E3031323A5359532D45584730322D5052442D573A34343632363739322D643739622D343663362D396539362D3537633632633930303336320000000000, 255.1750:00000000, 255.27962:06000000, 255.17082:B9040000, 0.24929:00000780, 4.21921:B9040000, 255.27962:A1000000, 255.17082:B9040000, 0.27745:0F010480, 4.21921:B9040000, 255.27962:07000000, 0.26881:3837372D, 255.21817:B9040000, 0.20385:65312D32, 4.28577:0F010480, 0.32001:05000780, 4.29953:0F010480, 0.32768:A1000000, 4.33024:0F010480 [Stage: CreateMessage]'
and to solve the problem we just make any modification to the mail subject and it sent successfully (i.e. add a space to the mail subject)
Did any one face this problem before