4.2.2 |
Soft |
The email account is over quota |
5.0.0 |
Hard |
The address does not exist |
5.1.0 |
Hard |
Another address status |
5.1.1 |
Hard |
A bad destination mailbox address |
5.1.2 |
Hard |
A bad destination system address |
5.1.3 |
Hard |
Bad destination mailbox address syntax |
5.1.4 |
Hard |
Destination mailbox address ambiguous |
5.1.5 |
Hard |
Destination mailbox address valid |
5.1.6 |
Hard |
Mailbox has moved |
5.1.7 |
Hard |
Bad sender’s mailbox address syntax |
5.1.8 |
Hard |
Bad sender’s system address |
5.2.0 |
Soft |
Other or undefined mailbox status |
5.2.1 |
Soft |
Mailbox disabled, not accepting messages |
5.2.2 |
Soft |
Mailbox full |
5.2.3 |
Hard |
Message length exceeds the administrative limit |
5.2.4 |
Hard |
Mailing list expansion problem |
5.3.0 |
Hard |
Other or undefined mail system status |
5.3.1 |
Soft |
Mail system full |
5.3.2 |
Hard |
The system is not accepting network messages |
5.3.3 |
Hard |
The system is not capable of selected features |
5.3.4 |
Hard |
Message too big for the system |
5.4.0 |
Hard |
Other or undefined network or routing status |
5.4.1 |
Hard |
No answer from the host |
5.4.2 |
Hard |
Bad connection |
5.4.3 |
Hard |
Routing server failure |
5.4.4 |
Hard |
Unable to route |
5.4.5 |
Soft |
Network congestion |
5.4.6 |
Hard |
Routing loop detected |
5.4.7 |
Hard |
Delivery time expired |
5.5.0 |
Hard |
Other or undefined protocol status |
5.5.1 |
Hard |
Invalid command |
5.5.2 |
Hard |
Syntax error |
5.5.3 |
Soft |
Too many recipients |
5.5.4 |
Hard |
Invalid command arguments |
5.5.5 |
Hard |
Wrong protocol version |
5.6.0 |
Hard |
Other or undefined media error |
5.6.1 |
Hard |
Media not supported |
5.6.2 |
Hard |
The conversion required and prohibited |
5.6.3 |
Hard |
A conversion required but not supported |
5.6.4 |
Hard |
A conversion with loss performed |
5.6.5 |
Hard |
Conversion failed |
5.7.0 |
Hard |
Other or undefined security status |
5.7.1 |
Hard |
Delivery not authorized, message refused |
5.7.2 |
Hard |
Mailing list expansion prohibited |
5.7.3 |
Hard |
Security conversion required but not possible |
5.7.4 |
Hard |
Security features not supported |
5.7.5 |
Hard |
Cryptographic failure |
5.7.6 |
Hard |
The cryptographic algorithm not supported |
5.7.7 |
Hard |
Message integrity failure |
9.1.1 |
Hard |
Hard bounce with no bounce code found (invalid email or rejected email from your mail server such as - sending limit) |