Does anyone have a pointer to something that explains using multiple
smart hosts (or just one) to selectively choose which destination
domains go through which smart host, and which are delivered directly
from the underlying sendmail server?
TIA
Tim Daneliuk <info@tundraware.com> wrote:
Does anyone have a pointer to something that explains using multiple
smart hosts (or just one) to selectively choose which destination
domains go through which smart host, and which are delivered directly
from the underlying sendmail server?
TIA
You can use FEATURE(mailertable) to select mailer and host based on destination domain.
see "Using Mailertables" section in cf/README file in sendmail distribution. https://www.sendmail.org/~ca/email/doc8.12/cf/m4/mailertables.html
What is missing for you?
mailertable examples:
# smart host equivalent
. esmtp:example.net
# routing subdomains
.example.org relay:relay.example.org
# force direct delivery
example.com esmtp:example.com
.examle.com esmtp:%1.example.com
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