New user notification / verification mail not sending

abval
(@abval)

2 years, 10 months ago
After registering on our website users are verified/approved and should be receiving a verification mail. The user is added through wp_insert_user(), added to the blog through add_user_to_blog and should be receiving a notification by wp_new_user_notification. However, no mail is received. Resending the validation email from the dashboard sends an empty mail with no subject. There seems to be an error raised by WP mail SMTP as well, but it is not very helpful:
```
Mailer: Other SMTP
SMTP Error: data not accepted.
```
Test mails however seem to work, as well as password reset mails. Forced from email is set and the same username and from mail is used.

This has previously worked and no changes have been made so I suspect some update messed things up, but this is just a guess. What could be the issue?

Viewing 7 replies - 1 through 7 (of 7 total)

Moderator t-p
(@t-p)

2 years, 10 months ago

This has previously worked and no changes have been made so I suspect some update messed things up,

To rule out a plugin or theme conflict, try to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

If you can install plugins, install and activate “Health Check”: https://wordpress.org/plugins/health-check/
It will add some additional features under the menu item under Tools > Site Health.
On its troubleshooting tab, you can Enable Troubleshooting Mode. This will disable all plugins, switch to a standard WordPress theme (if available), allow you to turn your plugins on and off and switch between themes, without affecting normal visitors to your site. This allows you to test for various compatibility issues.
There’s a more detailed description about how to use the Health Check plugin and its Troubleshooting Mode at https://make.wordpress.org/support/handbook/appendix/troubleshooting-using-the-health-check/`

Thread Starter abval
(@abval)

2 years, 10 months ago

I have tried with Health Check troubleshooting and the issue persists.

Moderator t-p
(@t-p)

2 years, 10 months ago

Possible reasons for not getting email see https://wordpress.org/support/topic/password-reset-not-sending-email/?view=all#post-8988847

Also, you may find this useful https://www.wpbeginner.com/wp-tutorials/how-to-fix-wordpress-not-sending-email-issue/

Thread Starter abval
(@abval)

2 years, 10 months ago

Sending mail with wp_mail() works fine. It is only the new user notification that does not seem to work.

Moderator t-p
(@t-p)

2 years, 10 months ago

Only a particular email address does not work? Or all of them?

Thread Starter abval
(@abval)

2 years, 10 months ago

No mail addresses work.

Thread Starter abval
(@abval)

2 years, 10 months ago

It appears that when sending to both user and admin the admin mail does receive the new user registered notification. The user however still does not receive any mail.

Using a different SMTP (a personal gmail account) works however.

Viewing 7 replies - 1 through 7 (of 7 total)

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New user notification / verification mail not sending

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