On 4/30/2019 9:13 AM, Tom Schmidt (tschmidt) wrote:
Japheth, Regarding the SMTP/SMTPS protocol tests, my patch update changes the "mail" command to "helo localhost" to provide the proper greeting dialog to the SMTP server. You can see this yourself easily with the telnet command:
My apologies. For some reason, I *completely* misread this one. Looking back, I know there had been discussion about the SMTP conversation before, but I can't find a good reason why we weren't sending EHLO at all, even if we weren't pausing for the response first (technically a protocol violation).
There's this: https://lists.xymon.com/archive/2005-December/004834.html but that's about it.
It seems to work fine in testing so far, so I'll go ahead and add this in. Probably going to go with EHLO, however, so as to return a useful full list of the destination server's offered features.
Thanks,
-jc