I followed centos 5.x pefect setup tutorial, I'm having trouble configuring my outlook to retrieve emails to my server, outlook can successfully login to smtp server but when it logs in for the pop3 an error occurs. here's the screenshot: [img=http://s4.postimage.org/1vPKqr.jpg] [img=http://s4.postimage.org/1vPWU9.jpg]
Make sure that you use the username and not the email address in outlook to login with pop3 and smtp.
oh my god... iam new in ispconfig. i had been headache with user login from my email client, check postfix config etc... because iam using email address with @ and/or + but still didnt work. Thanks Till for great answer