It is nice to know I am not alone in this problem, but too bad you are also having the same experience. I, too, print all of my Flight/Car/Hotel Reservations. Same email account for over 15 years, no changes on my end either.

I tried a "test" booking using an alternate email address and the confirmation was successfully delivered... just as you recommended.

I had previously contacted Hertz Web Support, to no avail. Today, I was able to get to a higher level of Support. That person successfully sent me an email, but the Res. Confirmation emails are still bouncing.

I also contacted my email provider. They are requesting of me to get the "bounced" email headers (from Hertz) in an effort to track down a faulty path or code. I have made the request to Hertz, we'll see what happens.

If it is only a problem for one customer, I can't expect Hertz to spend any decent amount of time going through massive amounts of code. If no solution is found, I suppose I'll have to change my email address with Hertz. Not a good choice for me, but at least it is a workable option. If there are any updates to be made, I will post them here.

Thank you again for your comments and suggestions!! Very much appreciated.