>Here's some clarification to the problem I'm having, and >what I had to do to fix it. My actions are temporary, >because I care more about stopping UCE than I do about the >RFC that requires you to accept envelopes with mail from:<>
mail admins who DON'T have IMGate block nul senders because they are desperate. It really is a very bad idea, and with IMGate doing its job, nul senders from spammers is not a problem. > Postfix is doing it's job in >this situation, but it's sending a bounce message back to >iMail with a null sender address (mail from:<>). > I don't know >why postfix is doing this. this is how bounces work, is why >I'm sure I have a directive in my >main.cf that's causing this, but I have yet to find it. Such behavior is in the postfix source code in order to implement RFC-compatible SMTP protocol, not in your params >Changing the directive in iMail to allow NULL senders seems >to have fixed this problem. I don't see that as a solution, >because I don't want to accept mail from NULL senders. Could >someone please help me figure out why postfix doesn't give a >valid mail from? postfix doesn't touch the envelope sender don't refuse nul senders at IMail or IMGate, and the deal with other problems. Len
