> We have experienced very bad email floods from the
> Bare CRLF code in Qmail, where another site that
> didn't understand the error and will keep sending
> the same message forever. It seems to be automated
> email programs and Microsoft SMTP servers, they will
> just try the same message until they are put in the
> badmailfrom file. I am not sure why this is not a
> subject that has come up more, I would think others
Actually this subject appears pretty frequently on this list.
> One easy fix is to change 451 to 554 in the string in straynewline in
> qmail-smtpd.c. This changes a temporary error condition to a
> permanent one, and normally causes the errant e-mail server to give up
> immediately.
And that's one of the two solutions. The other is to use the fixcrio utility. Search in
the archive on "fixcrio".
cheers,
Andrew.
