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SMTP auth always fails

Hi Team, 

I'm getting below exception, Please help on this...

javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 587, response: 421

Thanks,'

Naresh,

1 comment

Tom Lister Community Leader Oct 21, 2018

Hi Suresh

are you able to use the same credentials for other applications?

are you sending large numbers of mails?

can you use the send test email?

see article here too

https://confluence.atlassian.com/confkb/confluence-is-unable-to-connect-to-the-mail-server-response-code-421-314450663.html

Tom Lister Community Leader Oct 21, 2018

Can you try on port 25 or 465?

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