^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: warning: Unable to look up MX host .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: warning: Unable to look up NS host .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: warning: numeric domain name in resource data of (MX|NS) record for .*$
# for Postfix-2.3 and SpamAssassin
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtp\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=[^[:space:]]+, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=sent \(250 .*\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtp\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=[^[:space:]]+, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=deferred \(host [^[:space:]]+\] said: .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtp\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=[^[:space:]]+, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=deferred \(connect to [^[:space:]]+: (Connection timed out|read timeout|Connection refused)\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtp\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=[^[:space:]]+, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=deferred \(Host or domain name not found. Name service error for name=[^[:space:]]+ type=MX: Host not found, try again\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtp\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=[^[:space:]]+, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=deferred \(connect to [^[:space:]]+\[[0-9.]+\]: No route to host\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/local\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=local, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=sent \(.*\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/pipe\[[0-9]+\]: [[:upper:][:digit:]]+: to=<[^[:space:]]+>,( orig_to=<[^[:space:]]+>,)* relay=spamd, delay=[0-9.]+, delays=[0-9./]+, dsn=[0-9.]+, status=sent \(delivered via spamd service\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/qmgr\[[0-9]+\]: warning: connect to transport spamassassin: Connection refused$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/bounce\[[0-9]+\]: [[:alnum:]]+: sender non-delivery notification: [[:alnum:]]+$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: warning: non-SMTP command from .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: [[:alnum:]]+: warn: .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: [[:alnum:]]+: sleep: .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: [[:alnum:]]+: filter: .*$