Question About ports 465 and 587

[emilitingo]

About this image:

If I open port 587, will port 465 stop working? Or will both ports be available and can I use either port as needed?

If I change to port 587, will I have to reconfigure my email managers later?

About this picture:


It will automatically change this setting and I won't have to do anything? or should I make the changes manually later in plesk?

I am using Plesk Obsidian Web Host Edition

Thanks for the support

 

[IgorG]

If I open port 587, will port 465 stop working? Or will both ports be available and can I use either port as needed?

Before enabling 587 port:

root@friendly-banzai:~# lsof -i tcp:465
COMMAND     PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
master  3516935 root  114u  IPv4 67160597      0t0  TCP *:submissions (LISTEN)
master  3516935 root  115u  IPv6 67160598      0t0  TCP *:submissions (LISTEN)

root@friendly-banzai:~# lsof -i tcp:587
root@friendly-banzai:~#

After enabling 587 port:

root@friendly-banzai:~# lsof -i tcp:465
COMMAND     PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
master  3632049 root  114u  IPv4 69460309      0t0  TCP *:submissions (LISTEN)
master  3632049 root  115u  IPv6 69460310      0t0  TCP *:submissions (LISTEN)

root@friendly-banzai:~# lsof -i tcp:587
COMMAND     PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
master  3632049 root  129u  IPv4 69468761      0t0  TCP *:submission (LISTEN)
master  3632049 root  130u  IPv6 69468762      0t0  TCP *:submission (LISTEN)

So, port 587 will be added additionally to 465 port.

It will automatically change this setting and I won't have to do anything?

I checked and found that nothing changed in this tip.
In conclusion - nothing should be additionally configured, just port 587 will be added additionally.

 

[emilitingo]

I didn't think it would be so easy. I will try it and comment later on the results
Thanks for the help