Hi,
I have two users experiencing this problem.
While replying to "some" emails, the email will not send in outlook 2010 with a message saying:
"The operation failed, the messaging interfaces have returned an unknown error, cannot resolve recipient"
IF you save the failed outlook message and then view it in "drafts" in OWA, it shows it's adding the =SMTP: to the from of the email.
IF the user replies in OWA - it works.
I have two users experiencing this problem.
While replying to "some" emails, the email will not send in outlook 2010 with a message saying:
"The operation failed, the messaging interfaces have returned an unknown error, cannot resolve recipient"
IF you save the failed outlook message and then view it in "drafts" in OWA, it shows it's adding the =SMTP: to the from of the email.
IF the user replies in OWA - it works.