January 25, 2020 8:50 PM, "Edgar Pettijohn" <ed...@pettijohn-web.com> wrote:
> I haven't seen any mention of this, but for some reason in my limited > "testing" of filters I have > to use \r\n in my responses to smtpd. Is this normal? Doesn't seem to be > documented and what > filters I've looked at don't appear to be using \r\n. > Indeed, you must certainly NOT use "\r\n" in filters. > For example without ORS = "\r\n" the following script will cause smtpd to > basically just hang. > There is no errors reported, but when I attempt to telnet localhost 25 the > daemon doesn't greet me. > After adding ORS = "\r\n" everything works as expected. > I'm not familiar with awk beyond very basic uses, could this be due to some flushing not happening by default and which gets triggere with "\r\n" ? This is another awk filter which doesn't use ORS: https://github.com/jirutka/opensmtpd-filter-rewrite-from/blob/master/filter-rewrite-from so I'm not sure why yours block but the solution is not with "\r\n" for sure
