0yum-daily.cron Failed to send an email

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Thanks. I was wondering why it took so long. :grin:

I get the same error in terminal:

[root@ns cron.daily]# yum-cron
Not using downloaded nethforge/repomd.xml because it is older than what we have:
  Current   : Thu Sep  6 13:51:06 2018
  Downloaded: Mon Aug 27 13:17:09 2018
Failed to send an email to localhost: {'root@ns.mydomain.myltd': (450, '4.1.8 <root@mydomain.myltd>: Sender address rejected: Domain not found')}

But nothing shows up in my zimbra server. So as I suspected is the NS server which is failing to send it.