R=lookuphost defer (-1): host lookup did not complete
If you see following error message in exim maillogs
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2009-08-05 15:30:06 1MYhUc-0007Bz-LU == USER@domain.com R=lookuphost defer (-1): host lookup did not complete
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Solution : This is likely because your resolving nameservers are no longer responding to DNS queries. To fix this issue, you can manually edit the /etc/resolv.conf file.









