[NTLUG:Discuss] user replication between 2 linux servers

[Aaron Goldblatt]

> servers on the net as redundant mail servers (SMTP and POP3), is there an
> automated way to replicate user changes between the 2 machines?  I could
> probably write a set of scripts to accomplish this, but I thought I'd ask

If you want redundancy of mail stores, I'm not the right guy to look to, 
but if you want just redundancy of access points, you could do your two 
SMTP servers, rsync the passwd and group files (as previously discussed), 
and put the mail spools on an nfs server somewhere.  That's not totally 
unlike what I do.

The downside is that if the nfs share goes down you lose your access to 
mail.  The upside is that, if you rsync replicate the mail spools, to keep 
them up to date you'd have to do it after each delivery, and after each 
time someone checks mail.  A periodic update would produce lost and 
duplicate mail in the event of a failure.

ag