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