Hello Jason, I do not know why but you sent out three copies of my email message in full unquoted as a reply. And then in between the 2nd and 3rd copies you wrote your own response. That made the message rather unreadable. Please in the future double check the message before hitting send.
Jason Bailey wrote: > It is indeed being generated internally. The RCPT TO is there, but > because it lacks a MAIL FROM, we are seeing some email providers > drop the message, presumably because it looks like UCE/spam. "some email providers"? That makes it sound like you are generating bounces to random places on the net. That makes it sound like you have an open relay problem. > We are trying to get the manufacturer of the system to acknowledge > the problem and address it, but they're currently insisting there's > no problem. In the mean time I've got important emails that aren't > getting delivered. Your description is too vague to be useful. Details, or it didn't happen. > I was hoping to get Postfix to fill it in so that the resulting > email traversing the public Internet was standards compliant and > less likely to get filtered by someone else's UCE solution. Bounce messages from the MAILER-DAEMON using <> *are* standards compliant. That isn't the problem. It is definitely not the first problem to be solved. The first problem to be solved is to debug and fix why you are generating those bounce messages. > To be clear, this system sends out two sets of email. The first > includes all the proper headers and is not an issue. The second set > is missing the MAIL FROM all together. I am glad you are happy with the first set. That's great. That second set you as you have described them so far match the description of a bounce message. Bounce messages will contain a body part with the original message. And there will be an explanation of the action which generated it. Reading those messages will say what is happening. It is also possible, and perhaps even likely given what we know now, that you have a system that is an open relay and has been found by spammers who are exploiting it. Spammers often use forged from addresses. Which if so would explain why you are getting rejects from those email providers. Bob
