Other SMTP – Email not sent except on debug mode

Hi @bazedrt,

Thanks for reaching out! The error message you posted indicates that you’re hitting the limit on how many emails can be sent per hour. This limit is put in place by your web host and appears to be limiting you to 200 emails per hour.

You should reach out to them about this limit, as they may either be able to raise it for you or suggest a different hosting plan that has a higher or no limit.

Have a great day!

Hi David,

No it’s not a limit from the web host.

Because i can use others tools and platforms with no problem.

And like i said:

The strange thing is: i can send emails when i check the option “Debug Email Sending” (Debug Events -> Event Types -> Debug Email Sending)

Once i uncheck this option, SMTP does not work anymore

Exemple:
-> I check the “Debug Email Sending”, i can send emails ;
-> I uncheck this option, i can’t send emails;
-> I check the “Debug Email Sending”, i can send emails ;
-> etc..

This happens sometimes when i login to the admin but not always

I can left the box checked, but that’s not a suitable solution on long-term

Thanks for the support,

Have a nice day !

• This reply was modified 2 years, 8 months ago by bazedrt.

Hi @bazedrt,

We’re looking into why this may be occurring. Generally speaking, an error message like that would be coming from your SMTP host, and would mean that they are rate-limiting your sending. That said, there also wouldn’t be a way around it since it would be stopping you at the server level, so it’s odd that switching Debug Email Sending mode to Enabled allows messages to be sent.

I’ll let you know when I have more information on what may be causing this.

Thanks, and have a great day!

Hi @bazedrt,

The issue you’re seeing is rather odd but may be a coincidence in timing. Messages like the error you are seeing don’t come from WP Mail SMTP, but rather the SMTP host you’re connected to. It may be that they have a rolling limit or some other type of configuration that makes it appear like the problem goes away with debug. For verification, we recommend turning on Debug Event and leaving it on for a while. This way we can see if you continue to run into the errors you’ve receiving recently.

Thanks!

Hi @dpinson,

Thanks for your reply,

I have left it on and emails are sent successfully.

I found that this problem would appear, sometimes, when i log in on the admin panel, (without debug mode, it seems)
and that the plugin Wordfence sends an email when an admin logs in;
Maybe there is a link, maybe not ?
Anyway i disabled these automatic emails, we’ll see

Sorry i do not know php and so can’t help you more.

If the problem occurs again, I will investigate on my side and reopen a new issue here if needed.

I close this thread,
Have a nice day !