Cannot receive emails

[gorolla]

Hi,

I have a problem with my email using ISPConfig, I cannot receive emails at all but I can send using Outlook Express. However if I use webmail - squirrelmail - the email I receive will be myusername@example.com. The following is my mail log;

Aug 31 12:42:46 linux postfix/sendmail[5538]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postalias[5538]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5554]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5557]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5560]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5563]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5566]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5569]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5572]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:46 linux postfix/postmap[5575]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf
Aug 31 12:42:47 linux postfix[5579]: warning: My hostname server1 is not a fully qualified name - set myhostname or mydomain in /etc/postfix/main.cf

Can some let me know how to get this up and running. Thank you

gorolla