Will Setting a Reply To Address at a Different Domain Result in Spam

Question

I send transactional emails from my application on my customers behalf. I\'d like for the receiver to be able to click reply and have the reply go directly to my customer, witho

Answer 1

I was able to find the answer at another location http://www.quora.com/Does-sending-emails-with-a-From-address-with-a-different-domain-from-the-Reply-To-address-hurt-ones-deliverability

Apparently the reply-to header can be set to another domain without any threat to the deliverability of the email. On some of the smaller mail admins this may cause a problem, but technically speaking its perfectly legitimate.