Version K2 Five 5.3.
All processes with Send Email Activity terminated with following errors: There is no connection string for the destination email address….
But most of these errors can be resolved by just click ‘retry’.
We have done these tests:
1. The attachment server has no network packet loss.
2. SMTP restriction is, 30 mails per minute, 10000 emails per day.
We have done a stress test that a large number of SMTP messages were delivered in a short time. No error response. Only some delay happened when over 30 mails per minute.
3. We setup a test environment, which has same settings of SMTP as production. In the test environment, we designed a process with only one Send Email event. 20 instances were started and resulted with 10 errors.
Any advice is appreciated.