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Authentication in sendmail

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# 1  
Old 03-16-2018
Authentication in sendmail
Hello,

I am using sendmail.
I have a user who needs to send all internal email to one email relay and needs to send to one specific domain to another one that requires authentication.

Will the following configuration in mailertable work?

Code:
internal.domain  relay:[smarthost_for internal_emails.example.net]
specific_domain.example.com  relay [smarthost_for_specific_domain].example.com]

And this one to access:
Code:
AuthInfo:smarthost_for_specific_domain.dnsexit.com "U:USERNAME" "P:PASSWORD" "M:PLAIN"

# 2  
Old 03-22-2018
this article says more about sendmail to specific host.

Force sendmail to route mail to specific hosts or mailserver - nixCraft
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