I have read the Postfix's tutorial but...

[lks45]

I receive an error connecting with pop3!

https://help.ubuntu.com/community/PostfixBasicSetupHowto

the system needs create the folder "Maildir" in user system folder, but not create... Trying to login with a pop3 client I see: "-ERR chdir Maildir failed"

Someone can be help me?

[tshrinivasan]

Is the error show in server or the client?
what clicne you use for pop?

[lks45]

Is the error show in server or the client?
what clicne you use for pop?

client, any pop client... outlook, telnet...

[tshrinivasan]

Well.

see this link.
http://ubuntuforums.org/archive/index.php/t-114549.html

you have to create some directories in the home folder of the particular user, as

~/Maildir
~/Maildir/tmp
~/Maildir/cur
~/Maildir/new

[hyper_ch]

postfix is a MTA and no POP server. You'll have to install courier or dovecot.

[lks45]

postfix is a MTA and no POP server. You'll have to install courier or dovecot.

courier is installed too, see: https://help.ubuntu.com/community/PostfixBasicSetupHowto