- EXIM_MSGID [0-9A-Za-z]{6}-[0-9A-Za-z]{6}-[0-9A-Za-z]{2}
- EXIM_FLAGS (<=|[-=>*]>|[*]{2}|==)
- EXIM_DATE %{YEAR:exim_year}-%{MONTHNUM:exim_month}-%{MONTHDAY:exim_day} %{TIME:exim_time}
- EXIM_PID \[%{POSINT}\]
- EXIM_QT ((\d+y)?(\d+w)?(\d+d)?(\d+h)?(\d+m)?(\d+s)?)
- EXIM_EXCLUDE_TERMS (Message is frozen|(Start|End) queue run| Warning: | retry time not reached | no (IP address|host name) found for (IP address|host) | unexpected disconnection while reading SMTP command | no immediate delivery: |another process is handling this message)
- EXIM_REMOTE_HOST (H=(%{NOTSPACE:remote_hostname} )?(\(%{NOTSPACE:remote_heloname}\) )?\[%{IP:remote_host}\])
- EXIM_INTERFACE (I=\[%{IP:exim_interface}\](:%{NUMBER:exim_interface_port}))
- EXIM_PROTOCOL (P=%{NOTSPACE:protocol})
- EXIM_MSG_SIZE (S=%{NUMBER:exim_msg_size})
- EXIM_HEADER_ID (id=%{NOTSPACE:exim_header_id})
- EXIM_SUBJECT (T=%{QS:exim_subject})
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