IMAP is not included in your PHP installation

I have just installed phplist to send my weekly newsletter but
PHPlist needs the IMAP functions in PHP in order to connect to the mailbox. I have checked myinstalation and IMAP is installed on the server but the php module seems not to be.

How can I install or enable the iap module for php?

Thanks

 

The following:

sudo apt-get install php5

returns the message

Package php5-imap is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source.

what am i doing wrong

 

Please run

Code:

apt-get update

and try to install the package again.

 

It Worked Problem Solved

Just to clarify the steps to install php-imap

Code:

apt-get update

Code:

sudo apt-get install php5

thats it. Thanks to Falko & Till

 

Forggot dont forget to restart apache

Code:

/etc/init.d/apache2 restart

 

it's not enabled by default so enable it with:

php5enmod imap