Important Service Notice
We will be operating with modified support hours due to the US Memorial Holiday. SocketLabs team members will not be available for live chat or phone support on Monday, May 28th 2018. Normal support hours will resume on Tuesday May 29th, 2018.
Message Delivery Failure Codes
Applies to SocketLabs On-Demand
When messages bounce or fail in either the On-Demand service or in an On-Premise system, failure codes are provided in order to indicate the nature of the bounce or failure. On-Premise systems also allow these codes to be customized, as described in the KB article Modifying, Adding or Customizing Failure Codes.
The standard set of failure codes are described below.
The message was rejected by recipient’s mail server.
A recipient’s address was found to be invalid.
Delivery to the recipient’s address is temporarily unavailable.
System, network or protocol errors preventing delivery.
Informational, we received a reply of the following type.
Indicates that no other failure codes were encountered.
The following Knowledge Base article may also be of interest: