Re: System Start-Up Issue Progress

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On 07/04/2017 09:21 AM, Chris Olson wrote:
It remains a mystery what could have happened during a standard yum
update of the system to cause this domain and/or host related sendmail
issue.


Run "hostname". Has the hostname changed? Run "ls -l /etc/hosts /etc/resolv.conf". Have those files changed recently?

It's possible that this system was working in the past because its hostname was set up in DNS, and was removed. In that case, the problem wasn't related to "yum." sendmail would (IIRC) continue working after the system's hostname was removed from DNS, until the next time the system rebooted.

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