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ddtxra/CHECK_MAIL_SERVERS_VALIDITY_WITH_DIG_MX_AND_AWK

Created March 7, 2018 11:06
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Check for mailservers validity with DIG MX and AWK
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CHECK_MAIL_SERVERS_VALIDITY_WITH_DIG_MX_AND_AWK
cat domains.txt | awk 'BEGIN { ORS="\t" }; {print $1; system("dig +short mx "$1" | wc -l")}' > mailservers-declared-for-domain.txt
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