courier_login authenticator failed in exim email

[laks]

Dear Team,

When i was sending email from server showing error in exim_maillog.

[16059] courier_login authenticator failed for (domain.com) [1.1.1.1]:47845 I=[1.2.1.2]:25: 535 Incorrect authentication data ([email protected])

how can i fix this issue.

 

[cPanelMichael]

Hello

There are several potential causes of this error message. The following post provides a list of potential issues and solutions:

535 Incorrect Authentication Data

Thank you.

 

[laks]

Hi Michael,

Thank you for you reply, I have found one kind of solution, If you are using exim4 add the line in /etc/exim4/exim4.conf.localmacros file MAIN_TLS_ENABLE = true
or
vi /etc/exim.conf.local

MAIN_TLS_ENABLE = true

Thank you,