portalcti3

Hello,

I tried setting up the connection using the plugin predefined constants like so:

define( ‘WPMS_ON’, true ); // True turns on the whole constants support and usage, false turns it off.

define( ‘WPMS_DO_NOT_SEND’, false ); // Or false, in that case constant is ignored.

define( ‘WPMS_MAIL_FROM’, ‘noreply@fakedomain.com’ );
define( ‘WPMS_MAIL_FROM_FORCE’, true ); // True turns it on, false turns it off.
define( ‘WPMS_MAIL_FROM_NAME’, ‘My Website’ );
define( ‘WPMS_MAIL_FROM_NAME_FORCE’, false ); // True turns it on, false turns it off.
define( ‘WPMS_MAILER’, ‘smtp’ ); // Possible values: ‘mail’, ‘smtpcom’, ‘sendinblue’, ‘mailgun’, ‘sendgrid’, ‘gmail’, ‘smtp’.
define( ‘WPMS_SET_RETURN_PATH’, true ); // Sets $phpmailer->Sender if true, relevant only for Other SMTP mailer.

define( ‘WPMS_SMTP_HOST’, ‘smtp.fakehost.com’ ); // The SMTP mail host.
define( ‘WPMS_SMTP_PORT’, 25 ); // The SMTP server port number.
define( ‘WPMS_SSL’, ” ); // Possible values ”, ‘ssl’, ‘tls’ – note TLS is not STARTTLS.
define( ‘WPMS_SMTP_AUTH’, false ); // True turns it on, false turns it off.
define( ‘WPMS_SMTP_AUTOTLS’, false ); // True turns it on, false turns it off.

And it seems to set things up fine. Every subsite adopts this settings and all of them show auth as disabled. However the problem persists. The first subsite where the plugin gets activated first works, while the rest return an authentication error and the event log shows “SMTPAuth:bool(true)“.

Versions:
WordPress: 6.7.2
WordPress MS: Yes
PHP: 7.4.33
WP Mail SMTP: 4.4.0

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not authenticate.
Host: xx.xx.xx.xx
Port: 25
SMTPSecure:string(0) ""
SMTPAutoTLS:bool(false)
SMTPAuth:bool(true)

Server:
OpenSSL: OpenSSL 1.0.2k 26 Jan 2017
Apache.mod_security: No

Debug:
Fonte do e-mail: WP Mail SMTP Mailer: Outro SMTP SMTP Error: Could not authenticate.

SMTP Debug:
2025-03-24 12:09:10 Connection: opening to xx.xx.xx.xx:25, timeout=30, options=array()
2025-03-24 12:09:10 Connection: opened
2025-03-24 12:09:10 SERVER -> CLIENT: 220 smtp-relay.fakedomain.com ESMTP Postfix
2025-03-24 12:09:10 CLIENT -> SERVER: EHLO www.fakedomain.com
2025-03-24 12:09:10 SERVER -> CLIENT: 250-smtp-relay.fakedomain.com250-PIPELINING250-SIZE 10240000250-VRFY250-ETRN250-STARTTLS250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250-SMTPUTF8250 CHUNKING
SMTP Error: Could not authenticate.
2025-03-24 12:09:10 CLIENT -> SERVER: QUIT
2025-03-24 12:09:10 SERVER -> CLIENT: 221 2.0.0 Bye
2025-03-24 12:09:10 Connection: closed
SMTP Error: Could not authenticate.