What am I supposed to do when the message I have sent keeps coming back?

If you send an email to an IS AMBIS user who returns you with an undeliverable error message, the most common cause (can be read from the error message) is:

wrong address to which mail is redirected

In this case, it is necessary to cancel the incorrect redirect.These workers are authorized to do so. Select an authorized person according to your faculty or nearest workplace, forward an email with an error message and a request to cancel the redirection. Authorized persons can deliver the email to the correct recipient's mailbox locally.

depleted mailbox capacity

In this case, the mail server attempted to delete the recipient's "Spam + virus" folder, but the capacity of the recipient's mailbox was still insufficient to deliver your letter.