We have several Domino servers, but for this issue only two are important. For simplicity sake we'll call them Server1 and Server2. Server1 is our Mail and Administration server. Server2 runs Traveler and is also where the mail journal databases are stored. The journal databases is what we are including in the Domain Catalog.
Using the Administrator client to connect to Server2, looking on the Configuration tab, under Current Server Document, under Server Tasks / Domain Catalog, Domain Catalog is Enabled and the "Limit domain cataloging..." field is set to Server2. Under the Domain Indexer tab, the Schedule is Enabled, it is scheduled to run from 12:01AM - 11:59PM, the Repeat Interval is "0" minutes, running on Tue, Wed, Thu, Fri, Sat, and the "Limit domain wide indexing..." is set to Server2.
This schedule was setup to run a couple months ago, so the Catalog task should have finished long ago. When I open catalog.nsf on Server2, and look under Domain Indexer Status \ by Indexing Server, it shows all of the journal databases. Although the last indexed date is 1/31/19, so it hasn't re-indexed since it was setup.
All of the mail journal dbs are located in a directory on Server2, and each of the databases has the "List in Database Catalog" enabled on them.
The two things that don't seem right to me are (1) the last indexing date being 1/31, and (2) the size of the Domain Catalog (catalog.nsf) only being 9MB. That seems pretty small for a catalog covering 87 databases totaling over 215GB.
The search result is limited as it doesn't allows the search for encrypted fields are not being indexed.