Second Retry
The delay before a message is retried for the second time. The default is 30 minutes.
Third Retry
The delay before a message is retried for the third time. The default is 60 minutes.
Subsequent retries
The delay before a message is retried for the first time. The default is 240 minutes.
Failed Message Lifetime
This determines the amount of time a message will stay in the outbound queue before MailEnable gives up and moves the message to the Bad Mail directory. If the message has hit the maximum retry amounts, it will be moved to Bad Mail, even if Failed message lifetime has not been reached.
Delay notifications
When an email fails to be delivered, but the error is not permanent (which could happen if there was a network error, the remote server was down, or other errors), then MailEnable will send an email to the original sender to inform them that the message has been delayed. This option will allow you to turn this off, send a message only on the first failure, or to send a message back for each send delay. There is also the option to only send delay notifications after a specified amount time from when the message send is first attempted. This will allow the SMTP service try to send the message more than once before the sender is informed that there is a delay.
Do not generate Non-delivery Receipts
When an email cannot be delivered and the error is permanent, then MailEnable will send a message to the original sender informing them of the error. Enabling this option will stop this message from being generated.