Incoming email to ServiceNow- Guest UserIssue ->The user record ' guest' is responsible for the inbound email actions and SSO logins when the data is coming from a different user .->When the 'guest' user record is locked out, inbound email actions do not get processed. Questions :---------------->We can see that the guest user(of any instance) can be locked out when we try to give the username as 'guest' and try with wrong password for more than 4-5 times. Isn't this a security threat as when the user gets locked out, the inbound emails do not get processed and thus affecting the customers ? ->When I try to modify the 'guest' username, it is not allowing us to change this.What are the precautions that the customers can take not to get the 'guest' user locked out. Business rule to unlock the guest user do not work as this can be seen as another security issue. ->What are all the ways that the guest user can get locked out ?ReleaseNACauseNAResolutionQ)We can see that the guest user(of any instance) can be locked out when we try to give the username as 'guest' and try with wrong password for more than 4-5 times. Isn't this a problem for the customers when the guest user gets locked out, the inbound emails do not get processed and thus affecting the customers ? A)This is as-designed and not a PRB, at least from a Dev-Notifications perspective and how email is processed.If desired, one can allow a system to process inbound emails from locked out users using 'glide.pop3.process_locked_out'. This applies to all users, not just guest:https://docs.servicenow.com/csh?topicname=r_AllowLockedUsersInbdEmailAct.html&version=latest Q) When we try to modify the 'guest' username, it is not allowing us to change this.What are the precautions that the customers can take not to get the 'guest' user locked out. Business rule to unlock the guest user do not work as this can be seen as another security issue. A) Configure Script actions as mentioned at https://docs.servicenow.com/csh?topicname=t_LockoutForFailedLogins.html&version=latest?cshalt=yes to auto unlock user after few minutes.Q: What are all the ways that the guest user can get locked out? A) The user might be locked out due to failed login attempts or if an admin or user admin manually it locks out. Reference: https://docs.servicenow.com/csh?topicname=c_ManageUserSessions.html&version=latest