How to configure sendmail for relaying mails to relay server using authentication ?
- While sending mail to user through relay, authentication is failing to relay server.
# sendmail -Am -v -t To: firstname.lastname@example.org from:localhost@localhost Subject:test >>> MAIL From:<user@hostname> SIZE=66 530-5.7.0 Authentication Required. Learn more at 530 5.7.0 https://support.google.com/mail/?p=WantAuthError iv6-20020a05600c548600b003a5f54e3bbbsm2750693wmb.38 - gsmtp
- How to configure sendmail client which can relay mails to relay server with authentication ?
- Red Hat Enterprise Linux 8
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