# This extension is for postfix 2.0 (and can thus be enabled unconditionally when included in that package: ( proto=E?SMTP helo=<[^[:space:]>]+>)?
postfix/(local|smtpd)\[[0-9]+\]: warning: [\.0-9]+: hostname [^[:space:]]+ verification failed: Host not found(, try again)?$
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: reject: ETRN [^[:space:]]+\.\.\. from [^[:space:]\[]+\[[\.0-9]+\]$
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 \(Name service error for [^[:space:]:]+: Host not found\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(bad host/domain syntax: "[^"]+"\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host 127\.0\.0\.1\[127\.0\.0\.1\] said: 550 Message content rejected, id=[^\)]+\)?\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 504 <[^>]+>: Sender address rejected: need fully-qualified address$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 550 [^\)]+ (Access denied|Recipient address rejected|Relaying denied|Sender Not Authorised|unknown or illegal alias|User unknown; rejecting)[^\)]*\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 552 header content rejected: see [^\)]+\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 553 sorry, your envelope sender has been denied [^\)]+\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 554 <[^[:space:]>]+>:( Recipient address rejected:)? Relay access denied\)( proto=E?SMTP helo=<[^[:space:]>]+>)?$
postfix/smtp\[[0-9]+\]: [^\(]+ status=bounced \(host [^[:space:]]+ said: 571 <>\.\.\. denied\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=deferred \(host [^[:space:]]+ said: 450 <[^[:space:]>]+>: (Recipient address rejected: Recipient mailbox is full|Sender address rejected: Domain not found)\)$
postfix/smtp\[[0-9]+\]: [^\(]+ status=deferred \(host [^[:space:]]+ said: 451 Transaction failed.\)$
postfix/smtp\[[0-9]+\]: connect to [^[:space:]\[]+\[[\.0-9]+\]: (Connection refused|server refused mail service) \(port 25\)$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 450 <[^>]+>: (Sender|Recipient) address rejected: Domain not found; from=<[^[:space:]>]+> to=<[^[:space:]>]+>( proto=E?SMTP helo=<[^[:space:]>]+>)?$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 452 Insufficient system storage; from=<[^[:space:]>]+> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 501 <[^>]+>: Helo command rejected: Invalid (ip address|name); from=<[^[:space:]>]+> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 503 Improper use of SMTP command pipelining; from=<[^[:space:]>]+> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 504 <[^>:]+>: Helo command rejected: Invalid name; from=<[^[:space:]>]+> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 504 <[^>]+>: (Helo command|Recipient address) rejected: need fully-qualified (address|hostname); from=<[^[:space:]>]+> to=<[^[:space:]>]+>( proto=E?SMTP helo=<[^[:space:]>]+>)?$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 550 <[^>]+>: User unknown; from=<[^[:space:]>]+> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 554 <[^>]+>: (Recipient address rejected: )?(Relay a|A)ccess denied; from=<[^[:space:]>]*> to=<[^[:space:]>]+>$
postfix/smtpd\[[0-9]+\]: reject: RCPT from [^:]+: 554 Service unavailable; .* blocked using .*; from=<[^[:space:]>]+> to=<[^[:space:]>]+>
postfix/smtpd\[[0-9]+\]: warning: [^[:space:]:]+: hostname [\.[:alnum:]-]+ verification failed: Host name has no address$