What is the default mailbox in postfix?

Question

postfix

Hello.
Installed on the server, the Postfix mail server in the basic configuration.

myhostname = mkala.local
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mkala.local, localhost.local, , localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.50.0/24 192.168.60.0/24
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all

Do I understand correctly that Postfix's default mailbox is [email protected]??
If not, how can I find out the default mailbox? Tried this <system user>@mydomain failed to connect.

Answer 1

Postfix is ​​an smtp server. Its task is to route mail - to forward what clients have sent to it further - to other servers, or to store mail somewhere if it is intended for this server.
Protocols for collecting mail by client applications (POP3, IMAP, etc.) are simply not implemented in it. For this, there are Dovecot, Courier, Squirrelmail, etc.
In the current configuration, it will only perform unauthenticated SMTP forwarding from the addresses listed in mynetworks and directly from the server itself.