We just moved to Office 365 email and our Forms processes' instances are all suspending on email tasks in which there is more than one email address specified. I tried changing it to send to one email address and another in the cc or bcc fields, but it still suspends. As soon as I remove all but one email address, the process continues.
The message in event viewer says "Unable to send email to <name@domain.org>". Please ensure your email address is entered correctly. [LFF2001-EmailSubmissionTypo]". How can I fix this issue?