Not so sure how to explain this. We have an Exchange 2003 SP2 running on Server 2003, most clients are using Outlook 2003 some Thunderbird or similar mail clients.
When a user sends an email to anyone in the company using the Global Address List, sometimes the recipient and even the CCed recipient address comes out as (???????@domain.com) or sometimes as (?????????????).....so replying will bounce since the email address is invalid.
Have not found anything on the internet regaring my issue, I appreciate all the help.
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