Hello,
Updating from 4.99.5 to 4.100 caused my gmail app on android to not authenticate against the outgoing server vps on port 465 or 587 with ssl/tls like it did before.
Sending from roundcube on the vps itself was no problem. Receiving was no problem either, in roundcube or gmail mobile.
The problem was not in csf or with any of my certificates, i thoroughly investigated this with the help of gemini and claude.
Downgrading back to 4.99.5 solved the problem.
