Help to re install postfix

Hi,

I have a problem on Proxmox 7.2-5.
I wanted to testing ssmtp package, i install it but apt desinstall postfix on my Proxmox.
He just desinstall postfix and postifx-sqlite (when i do first install , it's install default)

When i want to reinstall postfix : apt install postfix
System want install lot of package :

root@SVR01:~# apt install postfix
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically...

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