I have an issue where I have created a new exchange account, all settings are correct, email address etc is fine, I can send externally to eg hotmail but when trying to reply or send back the external person gets an NDR. All exisiting accounts in exchange are fine and do not have this issue

What is the NDR, please post. Are you using any ldap verification that needs to be set up for this new account?James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hi gjaanewman, Any update for your issue? Regards! GavinPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.