>1) undeliverable (an MX said "unknown recipient") :
>
>awk '/reject.*Sender address rejected: undel/ {print $10, $(NF-3), $(NF-2),
>$NF}' /var/log/maillog | less
and of course you want to sort them by IP
awk '/reject.*Sender address rejected: undel/ {print $10, $(NF-3), $(NF-2),
$NF}' /var/log/maillog | sort -t[ -k2 | less
>or
>
>2) unverifiable (could not get a response from any MX):
>
>awk '/reject.*Sender address rejected: unverified address: connect/ {print
>$10, $(NF-3), $(NF-2), $NF}' /var/log/maillog | less
awk '/reject.*Sender address rejected: unverified address: connect/ {print
$10, $(NF-3), $(NF-2), $NF}' /var/log/maillog | sort -t[ -k2 | less
