Scheduled jobs for email accounts stopped working.

[computerhighway]

Scheduled jobs were working fine and reading emails for both personal and group email accounts. Now scheduled jobs are showing success but no emails are coming in to Espo. Only thing I can think I changed was the time from 3 minutes to 1 minute for group email accounts. Desperate to have it working again. Have restarted the server, cleared cache and removed and recreated cronttab. Please help.....

[computerhighway]

Switched back to 3 minutes and working again, wondering why 1 minute is not acceptable?