I am using Postfix as an internal mail relay server, and we have several servers internally running all sorts of custom code, some are packages/services, and some of it is native Linux or Windows system services that use this/these systems to communicate as a mail relay.
The problem I'm encountering is that I am working on cleaning up the server HELO names that they are communicating to the server as when sending mail, some are localhost.localdomain for example and it's hurting our IP reputation (blacklists/etc)
I installed pflogsumm which has been a great help, but I really wish there was a way I could get a list of IPs that are connecting to this server and the corresponding HELOs that the IPs are making (or their servernames that they are reporting as if you know what I mean).
If anyone knows how I can get this information from Postfix that would be great, a bonus would be able to expose this to pflogsumm so that I can view it in my daily mail report. Thank you!