I am having a similar issue for what it's worth. I don't think I have access to the server's mail log files, is there any other debugging I can do? I recently upgraded to 7.1 and everything went smoothly except mails are not being sent. I am running on shared Windows/IIS hosting if that helps at all (ie, not sendmail-enabled). I had another post about this previously that was somewhat helpful but I was still not able to actually get the mails to send, and I am not sure where the process is breaking down exactly. I am pretty comfortable in PHP if there is a place in the code I could add some "echo" statements to help with debugging or something like that.
Thanks for any help!
Mark
