FR: Correlation ID and Facility tag

As a user I would like to see the following features added to logging:

1: A single uniform OBJECT_ID that can be used to correlate logs to a single transaction. If I have an e-mail delivered, processed, and then redirected, I have to search through the logs pulling out the following four tags in order to try and make a correlation for this e-mail transaction:

"SMTP-IN:########” / "DNR:######## " / “PROCESSING:######## " / "SMTP-OUT:########”
It would be good if all of these stages of processing could be corollated by a single OBJECT_ID.

2: The addition of a FACILITY tag to be used when shipping logs off to a post-processing solution like Graylog or ElasticSearch.