WHMCS freezes during settlement

[Kazuto Nishio]

[Tue May 23 17:08:04.970329 2023] [proxy_fcgi:error] [pid 230968:tid 140543711491840] [client 207.148.105.197:50130] AH01067: Failed to read FastCGI header, referer: https://secure.test.fincode.jp/
[Tue May 23 17:08:04.970399 2023] [proxy_fcgi:error] [pid 230968:tid 140543711491840] (104)Connection reset by peer: [client 207.148.105.197:50130] AH01075: Error dispatching request to :49293: , referer: https://secure.test.fincode.jp/
[Tue May 23 17:09:51.464843 2023] [proxy_fcgi:error] [pid 231181:tid 140543736669952] [client 207.148.105.197:51298] AH01067: Failed to read FastCGI header, referer: https://store.ingnum.net/cart.php?a=checkout&e=false
[Tue May 23 17:09:51.464912 2023] [proxy_fcgi:error] [pid 231181:tid 140543736669952] (104)Connection reset by peer: [client 207.148.105.197:51298] AH01075: Error dispatching request to :49293: , referer: https://store.ingnum.net/cart.php?a=checkout&e=false

When I add a product to the cart and click the order button, WHMCS freezes and times out.
Sometimes there are errors, sometimes not.
The same also applies when the invoice payment button is pressed.

If you know how to cure this symptom, please tell us.

[WHMCS John]

Hi @Kazuto Nishio,

These sound like actions which trigger emails to be sent, meaning a slow connection or processing time of emails could be causing the timeout to be reached.

Do you see any errors in the Configuration > System Log at the time of placing the order or adding payment to an invoice?

Do you experience a delay or timeout when sending emails via other routes, Eg. Via the Client's Summary tab?

[Kazuto Nishio]

The system worked correctly after disabling the transmission of email addresses.
I am going to build an SMTP server.