Webmail giving some starnge Warning messages! Please Help

Question

Hi,
After upgrading to Snow Leopard Server, I'm getting strange warning messages in my web mail,
Find the warning messages below, Looking forward to your support.
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the datedefault_timezoneset() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Calcutta' for 'IST/5.0/no DST' instead in /usr/share/squirrelmail/functions/date.php on line 420
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the datedefault_timezoneset() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Calcutta' for 'IST/5.0/no DST' instead in /usr/share/squirrelmail/functions/date.php on line 95
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the datedefault_timezoneset() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Calcutta' for 'IST/5.0/no DST' instead in /usr/share/squirrelmail/functions/date.php on line 347
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are required to use the date.timezone setting or the datedefault_timezoneset() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Calcutta' for 'IST/5.0/no DST' instead in /usr/share/squirrelmail/functions/date.php on line 289
Thanks,
Gulab Pasha

Answer 1

first backup the file you're going to be editing:
sudo cp /etc/php.ini /etc/php.ini.bak
then edit the file:
sudo nano /etc/php.ini
then hit CONTROL-W (to search for something)
then type "date.time"
then hit RETURN
that should bring you to an area under modules that looks like the following:
; Module Settings ;
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
;date.timezone =
You can lookup your timezone at http://php.net/date.timezone (for instance"America/New_York")
then take out the semicolon and type your timezone after the equal sign so it looks like this:
; Module Settings ;
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = America/New_York
then hit CONTROL-X (to quit nano)
then hit Y (to save your changes)
then hit RETURN (to use the same file name)