Invalid recipient message
I have recently started having trouble with emails being returned, stating that the address had a fatal error, "reason: 550 Invalid recipient".
As I have been successfully emailing these recipients for some weeks, this change baffles me, particularly since the majority of my emails go through OK.
The volume of emails I send out has increased significantly recently, due to a new commitment, and it is important that I sort this problem out ASAP.
Can anyone please help?
iBook G4 Mac OS X (10.4.5)
As I have been successfully emailing these recipients for some weeks, this change baffles me, particularly since the majority of my emails go through OK.
The volume of emails I send out has increased significantly recently, due to a new commitment, and it is important that I sort this problem out ASAP.
Can anyone please help?
iBook G4 Mac OS X (10.4.5)
