503, "5.5.1", MAIL first - error
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davefes commented
Yesterday I started getting these errors on some of my ESP32s. I have noticed that in umail.py that CMD_MAIL is not used in the script.
The odd thing is that on a unit that was flashed weeks ago still works. I suspect that maybe something is going wrong in the erase and flash process (v1.15 image) but have run out of things to Google and try.
Appreciate any suggestions.
davefes commented
After a couple days of having this problem and flashing many images, trying three hotspots and two ISPs ... today the problem has gone away.