I also can see from the maillog that when the smtp check occurs

Sep 29 11:05:01 oscar postfix/smtpd[27269]: connect from unknown[x.x.x.x] Sep 29 11:05:01 oscar postfix/smtpd[27269]: improper command pipelining after MAIL from unknown [x.x.x.x]Sep 29 11:05:01 oscar postfix/smtpd[27269]: disconnect from unknow [x.x.x.x]

so obviously the smtp check is sending something postfix doesnt like/handle.? That isnt a bhiggy in itself - bgut it nojw makes me wonder out of curiosity exactly what the logic of? the smtp check is..

I also tried Jeremy's example of "ehlo xymonnet\r\nquit\r\n" in protocols.cfg - that also has the same warning/error in maillog

?improper command pipelining after EHLO from unknown[x.x.x.x]

all jolly wierd,.... ian

On Wednesday, 29 September 2021, 10:59:09 BST, Ian Diddams via Xymon <xymon at xymon.com> wrote:  

secondary question...

what triggers the smtp check?

Ive had instances where the test goes red, and then just a few seconds later back to green.? So this isnt a standard "every 5 minutes" clearly ?

... Wed Sep 29 08:44:39 2021 green 0:02:13 Wed Sep 29 08:44:15 2021 red 0:00:24 Wed Sep 29 07:44:36 2021 green 0:59:39 ...

anybody know? cheers ian

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