Re: [CentOS] Centos 7 specific cure for Spamassassin DNS lookup problem

[Gordon Messmer]

On 08/10/2017 01:21 AM, Gary Stainburn wrote:
I have the following error message in my /var/log/spamd
spf: lookup failed: available_nameservers: No DNS servers available!


Try starting spamassassin later.  Run "systemctl edit 
spamassassin.service" and insert two lines:

[Unit]
After=network-online.target

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