I'm seeing the strange behavior with basic cfmail sends in CF9. CF9 has an entry in the mailsent log that is was successfully sent but on the MailEnable logs (Mailenable exists on the same server as CF and CF sends all it's l through it) there wasn't even a connection attempt. Now this is a my bulk mail server and I'm probably averaging about 70,000 e-mails a day from that server and most mails go through just fine.
What i've discovered about the few that don't is they have a few things in common. Anything that goes out with a "mailworker" thread works 100% of the time. Mail that goes out as a "scheduler" thread seems to be 50/50". There is no spam filter involved here. I'm just checking logs from the CF side and from the mailenable side. CF says is was sent....mailenable doesn't ever see an attempt at that time. I've seen this on another of my CF9 servers that relays through our ISP's SMTP server. CF send it was sent in the mail sent log, but ISP has to record of a conenction attempt let alone a full message at that time. I think there is a CF9 cfmail bug, I never had an issue with this on CF8 (or cf7 for that matter). The setup was exactly the same. These problems just started a couple mounth ago when we upgraded to CF9.
Anyone have any ideas, or if other people think this sounds like a bug how I can prove it to Adobe?
-Dan