I have recently reconfigured sendmail and configured to send via a smarthost.
This appears to be working fine for all domains apart from one, ours!
Our intranet sends email to our own employees (mydomain.com) and also to clients (at external domains/mail servers hosted by the clients). The email to clients is working, however emailing to our own employees isn't getting through.
Sendmail forwards to our smarthost (smarthost.com).
In the syslog I see the same logs for a mail to a client domain (that works) and to our own domain (that never arrives).
Does anyone know how I would start to diagnose the issue?
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