SMTP -> FROM SERVER:220 smtp20.netcore.in ESMTP Postfix

<br />SMTP -> FROM SERVER: 250-smtp20.netcore.in
250-PIPELINING
250-SIZE 50000000
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

<br />SMTP -> ERROR: Password not accepted from server: 535 5.7.8 Error: authentication failed: authentication failure

<br />SMTP -> FROM SERVER:250 2.0.0 Ok

<br />SMTP Error: Could not authenticate.
Mailer Error: SMTP Error: Could not authenticate.