> There are catches, though. If a mail arrives at the live box, then the user > deletes the "last" mail in the folder, and only then (in time) does the same > mail arrive in the backup box, you have two desynched boxes. This shouldn't > really happen, since the two boxes should run at the same speed, and the live > box has somewhat larger load, but cases like this should be considered. >
The beauty of email is that there is no guaranteed time of sent/delivered. This means that the proxy that the users connect to, could actually be set on some predefined delay. For example, if the proxy has a 5 minute cache or so, then it can refresh the current contents on the mailserver, take care of both read write commands, ensure synchronization etc. However, you do have a problem if the proxy crashes, although unless it is writing, it would only mean that a user might get a mail that they have already seen. B > | Noll Janos <[EMAIL PROTECTED]> | http://www.johnzero.hu | > | "Expect the unexpected!" | ICQ# 4547866 | Linux rulez! | -- Robert Scussel 1024D/BAF70959/0036 B19E 86CE 181D 0912 5FCC 92D8 1EA1 BAF7 0959
