Hi Flood,
Thank you for your help. Answers are:
Kaspersky Total Security, Version 19.0.0.0.1088(f), data base is on auto update
Using Windows 10 Version 1903 ( OS build 18362.175)
EM Client version 7.2.34711.0
EM Client is listed as "trusted" in Kaspersky setings
Ports recommended for EMClient: POP - Port 110, SMTP -Port 25.
EmClient used as solo e-mail software
Kasperky Reports shows a number of reports in last 24 hrs, but no reference to EM Client
Noticed it 1-2 months ago as I rarely send attachments >500MB. No changes I can remember made to any software then.
When I queried EmClient support last month they said issue is elsewhere. Internet provider says issue is elsewhere. Problem is n overcome by pausing Kasperky.
Hope this helps.
Oscar