You're not alone. There were so many issues with 8.7 and 8.8 that we chose not to upgrade (till things are settled, we were thinking about this summer). 8.6 lacks features (NG modules) but at least it's rock-stable. It's nice Zimbra/Synacor provided these security patch for 8.6. It also shows they a...

You're stuck. The last patches for 8.6.0 broke the signatures (P13 and P14). To be more precise, they broke the "pictures in signature" feature (when you add an inline image to the signature, it's silently stored in the briefcase then anonymously shared). Zimbra/Synacor support is very awa...

Your server might be compromised.
It's not patched against the last XXE, you should look at the sticky thread about it in this sub-forum.

This was already the case in 8.7 IIRC.

Go through this thread, Frédéric released a script (and listed the bug related to the issue in last august).
http://lists.zetalliance.org/pipermail/ ... 01259.html

Hello.

Outdated doesn't mean broken/dangerous.
However, if you're afraid of that, you can do two things.
One is to firewall the access to the port.
The other is to update to 8.8.12P1, as PHP was upgraded in 8.8.12: https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.12

This is exactly the idea.

Welcome to the forum.

There's this: https://wiki.zimbra.com/wiki/Plus_Addressing

About issue #9, you might want to change the size of the redolog too so it gets deleted sooner and uses less space on disk. zmprov mcf zimbraRedoLogRolloverHardMaxFileSizeKB thesizeyouwant More info here: https://wiki.zimbra.com/wiki/Zimbra_NG_Modules/Running_Zimbra_NG_Modules_on_Zimbra_Network_Edit...

Looks like a "split domain" between two ZCS servers. That's not really "load balancing"...
IIRC, there's a page in the wiki about this.