postfix/(qmgr|smtp)\[[0-9]+\]: .* status=deferred \(connect to [^[:space:]]+\[[\.0-9]+\]: (Connection refused|server refused mail service)\)
postfix/cleanup\[[0-9]+\]: [A-Z0-9]+: message-id=<[^[:space:]]+>
postfix/local\[[0-9]+\]: warning: unable to create lock file /var/mail/[[:alnum:]]+\.lock: Permission denied
postfix/nqmgr\[[0-9]+\]: [A-Z0-9]+: from=<[^[:space:]]+>, size=[0-9]+, nrcpt=[0-9]+ \(queue active\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(Name service error for .*: Host not found\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(bad host/domain syntax: "[^[:space:]]+"\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(host [^[:space:]]+\[[\.0-9]+\] said: 550 .* (User unknown; rejecting|Relaying denied|Access denied\.|unknown or illegal alias: [^[:space:]]+|Recipient address rejected: This user does not have an account here \(MTA:imta15\))\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(host [^[:space:]]+\[[\.0-9]+\] said: 552 header content rejected: see .*\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(host [^[:space:]]+\[[\.0-9]+\] said: 554 <[^[:space:]]+>:( Recipient address rejected:)? Relay access denied\)
postfix/smtp\[[0-9]+\]: .* status=bounced \(host [^[:space:]]+\[[\.0-9]+\] said: 571 <>... denied\)
postfix/smtp\[[0-9]+\]: .* status=deferred \(host [^[:space:]]+\[[\.0-9]+\] said: 450 <[^[:space:]]+>: Recipient address rejected: Recipient mailbox is full\)
postfix/smtp\[[0-9]+\]: .* status=deferred \(host [^[:space:]]+\[[\.0-9]+\] said: 450 <[^[:space:]]+>: Sender address rejected: Domain not found\)
postfix/smtp\[[0-9]+\]: .* status=deferred \(host [^[:space:]]+\[[\.0-9]+\] said: 451 Transaction failed.\)
postfix/smtp\[[0-9]+\]: [A-Z0-9]+: to=<[^[:space:]]+>, relay=127\.0\.0\.1\[127\.0\.0\.1\], delay=[0-9]+, status=bounced \(host 127\.0\.0\.1\[127\.0\.0\.1\] said: 550 Message content rejected, id=[^[:space:]]+\)
postfix/smtp\[[0-9]+\]: connect to [^[:space:]]+\[[\.0-9]+\]: (Connection refused|server refused mail service) \(port 25\)
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^[:space:]]+\[[\.0-9]+\]: 504 <[^[:space:]]+>: Recipient address rejected: need fully-qualified address; from=<[^[:space:]]+> to=<[^[:space:]]+>
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^[:space:]]+\[[\.0-9]+\]: 550 <[^[:space:]]+>: User unknown; from=<[^[:space:]]+> to=<[^[:space:]]+>
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^[:space:]]+\[[\.0-9]+\]: 554 <[^[:space:]]+>: (Recipient address rejected: )?(Relay a|A)ccess denied; from=<[^[:space:]]*> to=<[^[:space:]]+>
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^[:space:]]+\[[\.0-9]+\]: 554 Service unavailable; .* blocked using .*; from=<[^[:space:]]+> to=<[^[:space:]]+>
postfix/smtpd\[[0-9]+\]: warning: [^[:space:]]+: hostname [\.[:alnum:]-]+ verification failed: Host (name has no address|not found)