I have two installs of canvas running side by side.

12.1 - I log into canvas, create a new user, it prompts to email the info to that user, email gets stuck in postfix (ISP is blocking port 25), I route that through an SMTP relay, and the email pops out the other end as expected.

13 - I log into canvas, create a new user, it prompts to email the info to that user, says it was sucessfully sent, and then... nothing.  Checked all of the mail/warning/error logs in postfix and there is nothing.  The canvas production log shows a bunch of sql queries that were executed, but no errors as far as I can tell.

Any ideas?