mail: SOGo sometimes hangs for 1-2 minutes after login
This could be related to MTU issues observed on PSR since no access log shows in logs during this time lapse.
This issue already occured before IaC migration (aka when there was mail-bkp
VM on srv-2.bm.psr) and still occurs on mail-1.vm.psr.phowork.fr
.
I don't recall having this issue when mailserver was hosted on pve-main.
The issue has been triggered from IPv4-only internet connection; no deep test has been done with it, nor any simple reproduction on IPv6-only.