I have a client who has a Global presence in 14 countries. Their website and mail is currently hosted in the US. Two times in as many days their hosts netblock has been the subject of a DDOS attack, hence losing access to the website and mail server.
I am looking at a proposal to provide 2 identical SME Servers providing web, mail, mail-lists, newsgroup, secure upload/download area etc, telehoused in the US and one here in NZ or Oz.
DNS would be either load-balancing or round-robin to share the load across both servers.
My question is what is the best and quickest way to mirror changes on both servers. Mail shouldn't be a problem but the newsgroups (used for tech support) and mail-lists could end up in a bit of a mess with messages out of sequence or with same message id's if they are not backed up almost instantaneously.
Obviously I have looked at using rsync but is there a better way.
Jon
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