Message Control SMTP Encrypted sending type not robust against laggy network connection

Message Control SMTP Encrypted sending type not robust against laggy network connection

Summary

When the SYN-ACK is received with a delay higher than 100ms, openSSL reports "connecting failed - no more retries". Added a logical retry loop: in this case wait 1 second and then retry (max 3 attempts) to resolve this. Verified by debugging: Mail sending now works with clumnsy-generated lags of 300-900 ms (other lags should be tried in testing).

Description

When the SYN-ACK is received with a delay higher than 100ms, openSSL reports "connecting failed - no more retries". Added a logical retry loop: in this case wait 1 second and then retry (max 3 attempts) to resolve this. Verified by debugging: Mail sending now works with clumnsy-generated lags of 300-900 ms (other lags should be tried in testing).



Issue Number: 226693
Fixed on Date: 14.9.2020
Versions: 8.10 0 BUILD 68622 | 8.20 0 BUILD 68579