Avatar of NickRedfern
NickRedfern
Flag for United States of America asked on

Cannot send email to mail contact (Exchange 2007)

Hi i am getting the error below when sending an email to an external mail contact from our on premise Exchange Server.  Emails sent to this recipient from gmail etc work fine.

There is a problem with the recipient's e-mail system. More than one user has this e-mail address. The recipient's system administrator will have to fix this. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator and then try resending the message after the problem has been resolved.
Exchange

Avatar of undefined
Last Comment
NickRedfern

8/22/2022 - Mon
NickRedfern

ASKER
I cannot find a duplicate email address on our Exchange Server.
Postmaster

Look for the address in AD.
From a Global Catalog server CMD run:

ldifde -f d:\smtp_check.txt -r "(proxyaddresses=smtp:fred.smith@domain.com)"

(assuming Fred Smith is the person and domain.com is the SMTP domain) :)

This will report any duplicates in YOUR system, hidden or not, which may be the issue.
The report will show any contact, mailbox, public folder etc that has this address.
NickRedfern

ASKER
Hi thanks for your response.  I have found an entry the Exchange Administrative group but cannot find this group to remove the entry:-

legacyExchangeDN:
ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipi
 ents/cn=Johnsmith


How do i remove the entry from here?

Thanks again

Tim
Experts Exchange is like having an extremely knowledgeable team sitting and waiting for your call. Couldn't do my job half as well as I do without it!
James Murphy
Postmaster

That LDAP read output will show the displayname of that object and a type to show if it is a folder or contact or mailbox.
Use normal Exchange Console to edit it and remove that address (as it is external).
ASKER CERTIFIED SOLUTION
NickRedfern

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
NickRedfern

ASKER
tutyu
NickRedfern

ASKER
good support
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.