In rejected connected connection, most of the inbound sender encounters. Here we will see the problem with the message being sent indicated by a roadrunner email inbound error message. Following are some errors we will see:
• 550 5.1.1
In which when the email address of the user does not match or does not exist or the account of that user is not active.
• 552 5.3.4
Message Too Large:
Message rejects when message content will reach the maximum limit, i.e., whenever you try to send the message with more great content than the given deadline. To Inbound message, roadrunner put a limit to 30mb.
• 550 5.7.1
The message contains the virus.
• 554 5.7.1
Null Sender with Multiple Recipients not Allowed here:
Roadrunner email inbound error will accept messages from the null sender, but the limit is thereof one recipient for such a message, and it will block to send message to another called “Spam”.