[CentOS] postfix startup issue - CentOS 5.2

Hi

I am trying to get postfix going on a friends VPS however after installing on startup i see this

Jan 27 11:15:13 postfix/postfix-script: starting the Postfix mail system Jan 27 11:15:13 postfix/master[28090]: fatal: pipe: Cannot allocate memory

and a top gives

Tasks: 23 total, 1 running, 22 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 524288k total, 160920k used, 363368k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached

any clue?

thanks

# uname -i Linux 2.6.18-028stab059.6 #1 SMP Fri Nov 14 14:01:22 MSK 2008 i686 i686 i386 GNU/Linux

# cat /etc/redhat-release CentOS release 5.2 (Final)