Hello everyone, please help!
The problem is: sometimes managers don't get email order confirmation. It happens maybe one time of 20 orders
Order present if look for it in admin panel
Administrators have different email providers, noone get confirmation if problem happens
I tryed phpmail and smtp mail sending - problem is not solved
I mooved site to differens servers - problem is not solved.
Problem is known about 4 months. Maybe it was earlier but I didnt see. For this time I always keep actual joomla version. Now it's 3.9.19 and vm 3.2.15
That VM version is very old and does not work correctly with latest Joomla versions (other people have reported problems.
Current VM is 3.8.4 - http://dev.virtuemart.net/attachments/download/1268/com_virtuemart.3.8.4.10335_package_or_extract.zip
Test on a copy of the live site as your template overrides (if you use them) may need updation as well.