UFW does not close port 25, how to force it?

Question

System administration

Hello everyone
I tried to naively close the ufw deny postfix command to close access from the outside to port 25
The ufw status verbose command displays

ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

To                         Action      From
--                         ------      ----
22                         ALLOW IN    Anywhere
80                         ALLOW IN    Anywhere
443                        ALLOW IN    Anywhere
21/tcp                     ALLOW IN    Anywhere
25                         ALLOW IN    Anywhere
3128                       ALLOW IN    Anywhere
1080                       ALLOW IN    Anywhere
25/tcp (Postfix)           DENY IN     Anywhere
22 (v6)                    ALLOW IN    Anywhere (v6)
80 (v6)                    ALLOW IN    Anywhere (v6)
443 (v6)                   ALLOW IN    Anywhere (v6)
21/tcp (v6)                ALLOW IN    Anywhere (v6)
25 (v6)                    ALLOW IN    Anywhere (v6)
3128 (v6)                  ALLOW IN    Anywhere (v6)
1080 (v6)                  ALLOW IN    Anywhere (v6)
25/tcp (Postfix (v6))      DENY IN     Anywhere (v6)

But the interactive postfix logs show that there are connections from spammers and the mailer logs are still littered with attempts to connect, what did I do wrong?