Hello,
As the popularity of Scientific Linux grows, so does the number of 
machines downloading security updates from ftp.scientificlinux.org.  The 
trouble we are having, is that all of the ftp connections that yum does 
on an update (especially a fresh installs first update) has been 
triggering our site's autoblocker.

We are working with our autoblocker people for a good remedy.  We also 
believe that yum 2.2 will help alleviate this problem.  But for the time 
being, ftp.scientificlinux.org occasionally get's blocked for a period 
of time.

**What can you, as a community do to help?
We are asking that as many places as can, would make local mirrors of 
whichever distributions they are running, and point their machines at 
them.  You do NOT have to be on the official mirror list.  You do not 
even have to tell us.

**Who should make a local mirror?
Commercial companies and businesses
   If you have more than 5 machines running Scientific Linux, mirror us.

Universities, labs, personal use, anything else that doesn't fall into a 
place that makes money.
   If you have more than 10 machines, we recommend that you mirror us.
      You should at least start figuring out how.
   If you have more than 20 machines, mirror us.

**How do I make a mirror and point yum at it?
Mirroring
https://www.scientificlinux.org/download/mirroring/
Yum change
https://www.scientificlinux.org/documentation/howto/yum-change

If I need to elaborate on any of those instructions, please let me know.
This might initially be hard for you.  But you'll find that a local 
mirror makes updates quicker and saves you time in the long run.

Many Thanks
Troy Dawson

-- 
__________________________________________________
Troy Dawson  [log in to unmask]  (630)840-6468
Fermilab  ComputingDivision/CSS  CSI Group
__________________________________________________