Comment 4 for bug 1866572

Thanks Matthias, the summary is very helpful.

"Breaking Changes" refers only to fetchmailconf. As far as I can tell, this is no longer packaged, and wasn't in 6.4.1-1ubuntu1 either. Is this correct? It is still listed as a Suggests, but seems to have disappeared in 6.4 packaging compared to Bionic where it was present, for example. Or is it somehow integrated into the main binary now? If fetchmailconf isn't present in Focal, I think they aren't Breaking Changes from Ubuntu's perspective? But it might be a separate bug that needs resolving that fetchmailconf has vanished?