[CentOS] the Postfix packages are way too old

Fri Jun 18 21:28:36 UTC 2010
Florin Andrei <florin at andrei.myip.org>

If you deliver more than a few emails to the outside world, especially 
if a good portion of those go to Yahoo, you may want to read this message:


Actually, read the whole thread, it's interesting and the discussion 
still continues:


TLDR: The 2.3.3 Postfix version that comes with RH / CentOS 5 doesn't do 
delivery rate control very well and has a habit of annoying some email 
providers. A simple upgrade from 2.3.3 to 2.7.0, no config changes, can 
improve delivery rate by 50% in some cases (e.g. if you deliver 
thousands of emails to Yahoo). With config changes, the improvement 
might be even bigger.

Fun fact: Postfix-2.3.3 has been released in August 2006. Think about that.

Florin Andrei