On 1/31/06, Marc Sherman <[EMAIL PROTECTED]> wrote: > Burhan Khalid wrote: > > > > I already had a feeling these were the only two options. I guess I'll > > have to have a word with the client since the IP is shared against an > > entire office. > > It sounds like you might be having this problem with an MUA submission, > and you're responding to the bogus address with a 5xx failure in the > RCPT acl. Generally speaking, MUAs can not be trusted to handle 4xx or > 5xx failures correctly, leading to things like infinite retries from the > MUA outbox. For this reason, it's usually preferred to accept and > bounce in local submission mode. Just make sure you've got a confirmed > envelope-from address to send a bounce to before accepting the message. > A good way to do that is to require authenticated submission, and use > control=submission to have exim rewrite the envelope-from address to > [EMAIL PROTECTED]
Marc: I only half-understood your suggestion. I understood the part that we can't trust client software to handle errors correctly. I already require authenticated submission (users must authenticate before they can send -- is this the same thing?). I don't understand the last part, can you please dumb it down a bit? How can I tell exim to send a bounce back message? Thanks, Burhan -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
