My memory is a bit hazy from back then, but there seemed to be cases where mail servers would immediately respond with a 4xx or 5xx error state after a MAIL from in certain cases, which would mean the service was down enough that you'd want a banner check to note it.
That being said, it's been a while since the heyday of MTA craziness and there are probably fewer of us running sendmail servers on single-core Athlon's with sky-high load averages.
The MAIL command itself doesn't seem to cause errors to be logged on my systems, but I know it has for others.
-jc
On Fri, March 25, 2016 12:25 pm, Richard Hamilton wrote:
Unless someone remembers the origin of that, I doubt you'll ever know for sure why. It might have been a workaround for some mail server quirk, or simply a mistake. If for some reason it works better with _any_ extra command before QUIT, perhaps NOOP (no-op) would be the best candidate. :-)
On Fri, Mar 25, 2016 at 2:12 PM, John Thurston <john.thurston at alaska.gov> wrote:
On 3/24/2016 3:39 PM, J.C. Cleaver wrote:
- snip -
Two questions:
Is there anyone for whom this test is _not_ filling up the error log on their smtp server?
If I edit the native protocol.cfg, am I correct that I'll need to replace protocols.cfg with each code update?
One option here is to place your edits in a separate file included at the top.
Dang. I hadn't thought of that. I've now done this and the new test definitions behave as expected.
My first question, however, remains unanswered.
Is there anyone using the SMTP test for whom the test is _not_ generating smtp 50X error results?
Why is the xymon protocol test sending a blatantly invalid command "mail\r\n" to the smtp server?
The smtp verb MAIL must be followed with something to mail. Xymonnet isn't considering the response to this "send" string, only the response the smtp server gives to the initial connection. Where is the benefit of sending anything other than a "quit\r\n" to politely close the connection and free the smtp server-resources?
-- Do things because you should, not just because you can.
John Thurston 907-465-8591 John.Thurston at alaska.gov Enterprise Technology Services Department of Administration State of Alaska
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