Not A Bug Facing issue while configuring SMTP

[srsakib]

Hi,
I tried to set the SMTP in Mail Configuration. After that when I click on Test Configuration it stuck on that page and do nothing. After reloading the page instantly, it showed 524 error. I checked the error log and found the below reports.

2020-12-04 05:16:31.013341 [INFO] [8359] [141.101.76.68:47742#APVH_<main domain>:443] File not found [/home/<username>/public_html/503.shtml]
2020-12-04 05:16:30.003837 [INFO] [8359] [162.158.166.111:11342#APVH_<subdomain>:443] File not found [/home/<username>/public_html/<clientexec installation directory>/503.shtml]

I searched on google about fixing the issue. But most of them are the related solution for WordPress. I don't know the proper solution for this error. If someone knows please help me to figure it out.

Thanks

 

[CE-Matt]

I believe the SMTP issue was being caused by a connection refused error.

To debug SMTP, enable logs to level 5 (https://www.clientexec.com/members/knowledge-base/maintenance-~77/how-to-enable-logging~80) and you'll be able to see the SMTP traffic, and any errors.

 

[srsakib]

Thank you so much. The error is only for the 465 port. everything is fine with 587 port. I'll try to debug.

 

[srsakib]

I am getting the same error. @srsakib have you found the solution?

The server may have disabled SMTP port. So, please check & configure it.