How do I Increase Max Defers value in Linux Dedicated Servers ?

Linux Web Host Manager will have restriction in sending bulk amount of mails based of the mail failure percentage. If any of the domain exceeds the allocated mail failure limit mails will started to bounce and mail server will stops the outgoing mails from particular domain. In dedicated servers root access will be provided to solve such issues immediately you can temporarily increase the limit and solve it. 

1.Login into the WHM
2.Choose Modify an Account under Account Functions
3.Choose the particular domain name for which you would like to increase mail failure percentage
4.Click on Modify
5.Increase the limit of “Maximum percentage of failed or deferred messages a domain may send per hour”
6.Click on Save

But its not advisable to keep high value or max deffer in cPanel server which may cause IP reputation and outgoing spam issues.