Raised from here and comments below → .
As stated perfectly by @jungle in the linked issue:
FYI, the config can be overridden in settings.php.
All are able to be overridden.
$config['smtp.settings']['smtp_on'] = TRUE;
$config['smtp.settings']['smtp_host'] = 'exmple.com';
$config['smtp.settings']['smtp_port'] = '465';
$config['smtp.settings']['smtp_protocol'] = 'ssl';
$config['smtp.settings']['smtp_username'] = 'dummy@example.com';
$config['smtp.settings']['smtp_password'] = 'pAssword';
It's possible thatOn local, use the credentials of stmp1@example.com.
On CI, use the credentials of stmp2@example.com.
On Prod, use the credentials of stmp0@example.com.
In code, it's dummy@example.com.
So I recommended to create a task for adding this info as help text to let users know about this possibilities, since not all users are aware of it yet.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I think this should also mention the info stated in
#3012631: smtp_on option still sends mail on 8.x-1.0-beta4 →
:
to disable SMTP via settings.local it is not enough to overwrite 'smtp.settings smtp_on'
$config['smtp.settings']['smtp_on'] = FALSE;
but you also need to overwrite 'system.mail interface.default':
$config['system.mail']['interface']['default'] = 'php_mail';