Long delay sending emails from roundcube

Hallo liebe Leute.
I need some recommandations how to solve this problem PLEASE
"Very Long delay sending emails from roundcube"
My roundcube has reached 86%
Thank you
Habib.

Long Delay Sending EMails from roundcube I searched on Google Look What I Found:

have you checked for any errors in your browser console. sometime the behaviour you describe of getting "stuck" on the sending screen is caused by having
Code: https://www.calvindudespain.com/ Select]
add_header X-Frame-Options DENY;
in your httpd config. Roundcube uses frames.

you could also try enabling smtp_debug in your roundcube config and then it will log the SMTP conversation so you can check that the server is responding in good time. [Source: