Undeliverable Messages - Microsoft Community

several days, have received repeated returned mail - undeliverable messages when send email 1 particular contact. have emailed years without issues until issue presented last week. part of message says "click here if feel message in error", have done. date, no reply has been received. puzzled how resolve issue , frustrated not able communicate contact. thank in advance solution.

hi,

based on information have provided above, there possibility account domain blocked particular contact. can reason why continuously received returned emails specific person. in case, suggest fill out form , send information outlook.com delivery. once done, our microsoft team able check if account domain has been blocked. you'll received email update them regarding form you've sent.

let know how goes after performing aforementioned solutions. we'd glad further assist you.

Outlook.com / Email / Sending, receiving, and reading email