13 lines
295 B
Bash
13 lines
295 B
Bash
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#!/bin/bash
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nslookup mailcow.email 127.0.0.1 1> /dev/null
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if [ $? == 0 ]; then
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echo "DNS resolution is working!"
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exit 0
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else
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echo "DNS resolution is not working correctly..."
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echo "Maybe check your outbound firewall, as it needs to resolve DNS over TCP AND UDP!"
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exit 1
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fi
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