What This Error Means
The recipient's email account has run out of storage space and cannot accept new messages. This is typically a temporary condition that resolves when the user clears their mailbox.
Common Causes
- 1Recipient hasn't checked email in a long time
- 2Large attachments filling up the mailbox
- 3Account has a small storage quota
- 4Recipient is receiving too much email
How to Fix It
- 1Retry delivery after 24-48 hours
- 2Contact recipient through alternative channels
- 3After multiple failures, consider removing from active list
- 4Mark as soft bounce and retry with decreasing frequency
Quick Reference
- Error Code
- 452 4.2.2
- Category
- Temporary Failure
- Severity
- Medium
- Should Retry?
- Yes, with backoff
View All SMTP Errors