Change to an SMTP, x400, and x500 to new Alias

Question

_{Tuesday, August 23, 2016 1:03 PM}

Running Exchange 2013 for On-Premise Exchange and configure for Hybrid to Office 365.

All user mailbox resided in office 365 but I have to edit account information using on premise Exch4013

In our organization we allow a person who gets married and wish to change their display name, login id and email address. The Display name and alias/login id is change by our FIM team.  

My question:

what would be the best way (Best Practices) to change the user SMTP address to the new alias in Exchange 2013 and how do I update the x500 and x400 address to reflect the change in the user's new alias?

All replies (5)

_{Wednesday, August 24, 2016 12:15 AM ✅Answered | 1 vote}

Best practice is to add the new SMTP address, make it the primary (reply) address and keep the old address so that replies to old e-mail reaches the mailbox.

If you're not using X.400 addresses, best practice is to simply remove them.  I don't know that anyone sends using X.400 addresses anymore.

Just leave the X.500 addresses alone.  Nobody sees them and if you change them you may break replies to old e-mail from internal Outlook users.

Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
Celebrating 20 years of providing Exchange peer support!

_{Wednesday, August 24, 2016 6:44 PM ✅Answered}

No because the legacyExchangeDN property (the hidden X.500-like address) doesn't change when you change the alias.  If you reuse the alias, it'll append something to the legacyExchangeDN to keep it unique.

Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
Celebrating 20 years of providing Exchange peer support!

_{Wednesday, August 24, 2016 12:12 PM}

follow-up question to the x500... in my company we reuse login names... if Barb Smith change her name to Barb Holmes and her new login ID and email address went from smithb to holmesb. Would there be an issue with the x500 if a new hire Bob Smith whos email address is smithb? If so how would i fix it.

Thank You,

Larry

_{Wednesday, August 24, 2016 6:47 PM}

Thank You!!!!

Larry

_{Wednesday, August 24, 2016 6:47 PM}

You're welcome.  Happy to have helped.

Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
Celebrating 20 years of providing Exchange peer support!