Change log for POSTFIX_MAIL

Date	Changes
2022-10-06	Enhancement - Modified grok pattern to parse the logs.
2022-07-18	Enhancement - Mapped host.hostname to principal.hostname. - Mapped host.ip to principal.ip. - Mapped host.mac to principal.mac. - Mapped host.id to principal.asset.asset_id. - Mapped host.os.name to principal.platform. - Mapped network.ip_protocol to TCP if input.type is tcp. - Mapped log.source.address data src_ip to principal.ip, src_port to principal.port. - Mapped agent.id to metadata.product_log_id. - Mapped agent.type to metadata.product_event_type. - Mapped agent.version to metadata.product_version. - Mapped source_ip to principal.ip. - Mapped source_hostname to principal.hostname. - Mapped target_email to network.email.to if it is an email else mapped to target.user.userid. - Mapped from_user to network.email.from.

Date

Changes

2022-10-06

Enhancement
- Modified grok pattern to parse the logs.

2022-07-18

Enhancement
- Mapped host.hostname to principal.hostname.
- Mapped host.ip to principal.ip.
- Mapped host.mac to principal.mac.
- Mapped host.id to principal.asset.asset_id.
- Mapped host.os.name to principal.platform.
- Mapped network.ip_protocol to TCP if input.type is tcp.
- Mapped log.source.address data src_ip to principal.ip, src_port to principal.port.
- Mapped agent.id to metadata.product_log_id.
- Mapped agent.type to metadata.product_event_type.
- Mapped agent.version to metadata.product_version.
- Mapped source_ip to principal.ip.
- Mapped source_hostname to principal.hostname.
- Mapped target_email to network.email.to if it is an email else mapped to target.user.userid.
- Mapped from_user to network.email.from.