Unable to send mail due to authentication error

HI,
Suddenly today all my mails stoped going. ON testing using test mail, it is saying that the authentication failed. I have not changed the password, still it is saying that. So i then change the password and tried again. Same result.
It is for the email id: [email protected]
Here is the log:

Versions:
WordPress: 5.7.1
WordPress MS: No
PHP: 7.4.18
WP Mail SMTP: 2.8.0

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not authenticate.
Host: smtppro.zoho.in
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.1f 31 Mar 2020
Apache.mod_security: No

Debug:
Mailer: Other SMTP
SMTP Error: Could not authenticate.

SMTP Debug:
2021-05-09 07:01:09 Connection: opening to smtppro.zoho.in:587, timeout=300, options=array()

2021-05-09 07:01:10 Connection: opened

2021-05-09 07:01:10 SERVER -> CLIENT: 220 mx.zoho.in SMTP Server ready May 9, 2021 12:31:10 PM IST

2021-05-09 07:01:10 CLIENT -> SERVER: EHLO asharficlothing.in

2021-05-09 07:01:10 SERVER -> CLIENT: 250-mx.zoho.in Hello asharficlothing.in (45.32.113.70 (45.32.113.70))250-STARTTLS250 SIZE 53477376

2021-05-09 07:01:10 CLIENT -> SERVER: STARTTLS

2021-05-09 07:01:10 SERVER -> CLIENT: 220 Ready to start TLS.

2021-05-09 07:01:10 CLIENT -> SERVER: EHLO asharficlothing.in

2021-05-09 07:01:10 SERVER -> CLIENT: 250-mx.zoho.in Hello asharficlothing.in (45.32.113.70 (45.32.113.70))250-AUTH LOGIN PLAIN250 SIZE 53477376

2021-05-09 07:01:10 CLIENT -> SERVER: AUTH LOGIN

2021-05-09 07:01:10 SERVER -> CLIENT: 334 VXNlcm5hbWU6

2021-05-09 07:01:10 CLIENT -> SERVER: [credentials hidden]

2021-05-09 07:01:10 SERVER -> CLIENT: 334 UGFzc3dvcmQ6

2021-05-09 07:01:10 CLIENT -> SERVER: [credentials hidden]

2021-05-09 07:01:10 SERVER -> CLIENT: 535 Authentication Failed

2021-05-09 07:01:10 SMTP ERROR: Password command failed: 535 Authentication Failed

SMTP Error: Could not authenticate.

2021-05-09 07:01:10 CLIENT -> SERVER: QUIT

2021-05-09 07:01:10 SERVER -> CLIENT: 221 mx.zoho.in closing connection

2021-05-09 07:01:10 Connection: closed

SMTP Error: Could not authenticate.

• This topic was modified 3 years, 10 months ago by nits1404.
• This topic was modified 3 years, 10 months ago by nits1404.