The sender address from the envelope — not from the message header.
It is part of the default set. The field set is defined in the accounting block, and fields are worth adding deliberately: there are as many delivery records as delivered recipients, and every extra column is multiplied by that volume.
It is exactly what our pattern rule selects the sending address by, and it is exactly where the bounce report will come.
Where the field exists and whether the star includes it:
| Record type | In the star |
|---|---|
| d — delivery | yes |
| b — bounce | yes |
| t — temporary failure | yes |
| r — reception | yes |
| rb, rs — external report | yes |
| f — complaint | yes |
In a shared file an empty value comes in two kinds: the line has no data — or the field is not selected for its record type.
<acct-file /var/log/pmta/acct.csv> record-fields d *, !orcpt</acct-file>
head -1 "$(ls -t /var/log/pmta/acct-*.csv | head -1)" | tr -d '\r' | tr ',' '\n' | grep -n '^orig$'