504 Gateway Time-out with Mass Email

[Peter Walker]

When i try to send out emails to my subscribers using the mass email feature, some emails get out, but then it crashes with "504 Gateway Time-out nginx" If i send a small number of emails, it works.

I tried upgrading php to v8.0.3 and setting max_execution_time to 90, but that did not help
I need to be able to send emails to all my members without this crash. How can this be fixed.

I am using phpBB 3.3.11. My forum is at https://nesara-gesara-qfs.com

Regards

Peter

[Crizzo]

You should use a SMTP mailer, not the mail() function. Or do you use it already?

[Peter Walker]

I am definately using SMTP and Amazon SES as email service. I have been using this combination for years, but recently i have been getting these time-out emails and do not know how to fix it.

[Mick]

Assuming you havn’t changed anything in phpBB that could cause this maybe AWS has? Have you asked them? Searching I found this which doesn’t mean a whole lot to me but it might to you?