Franky Van Liedekerke writes:
> Hi,
>
> I've setup qmail 1.03 with the anti UCE path from Sam, but I'm seeing
> some strange things:
>
> when somebody from the external word sends a mail to a nonexistent user,
>
> he gets a mail back
> with failure notice etc, but in the notice it isn't said why it failed.
Since a nonexistent recipient is now rejected by RCPT TO:, it is the
sending host that is responsible for generating the bounce message, not
Qmail.
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 dpinc.ml.org - legitimate mail welcome, 64K max message size ESMTP
MAIL FROM:<>
250 ok
RCPT TO:<[EMAIL PROTECTED]>
550 Sorry, no mailbox here by that name. (#5.1.1)
If the sending mail server takes the 550 rejection, and throws it away,
someone's buggy code needs to be fixed.
> But I can see the reason in the logfiles. Does this have something todo
> with the remote client or remote mailserver?
> When I try the same, it's ok for my hotmail account, and I see the
> failure reason.
Because Hotmail's mail servers properly record the bounce error code.
For everyone's edification, identify the mail server who's bounce is brain
dead. I've heard of certain mail server who can't generate a meaningfull
error message for a MAIL FROM:, but this is a first time I've heard of any
mutation that doesn't even tell you why RCPT TO: rejected.
