Hello,I've got an Exchange 2007 SP1 environment and I'm having a problem with unicode/multilanguage emails.We've recently started interacting with non-English email addresses, but I've found that our exchange environment cannot handle them.For example, I set an alias on a user mailbox of "U+039F@mycompany.com", which is the Greek letter 'O' I believe.When I attempt to send an email to that address, I get this:Undeliverable: testDelivery has failed to these recipients or distribution lists:'Ο@mycompany.com'The format of the recipient's e-mail address isn't valid. A valid address looks like this: username@contoso.com. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try sending the message again, or provide the following diagnostic text to your system administrator.So outlook seems to convert the unicode value to the greek letter just fine, but exchange doesn't know what to do with it.Any ideas??

More data pointsIf I copy/paste one of those characters into an email body, outlook/exchange handles it just fine. For example the letter: (unicode value: U+02B0). It works as a subject as well.But if i try and send an email to and address of @mycompany.com, I get that same NDR I posted above. I do get this message in the NDR body: @mycompany.com#550 5.1.3 STOREDRV.Submit; invalid recipient address #SMTP# On my recipient, in this case I have an alias of 'U+02B0@mycompany.com'. If I try and make an alias of @mycompany.com, I get an error in the Exchange Management Console of: "The address '@mycompany.com' is not a valid SMTP address." Thanks in advance for any assistance

nobody else has seen this? seems like it would be a common deal with any "non-english" languages