Early last week I posted about a problem I was having with email getting stuck in my active queue, which went unanswered. That's OK; I understand the nature of these forums. This forced me to re-think how I was handling Spam on our email gateway, which I probably should have done before any way. So, it was kind of a blessing in disguise that no one answered.
However, this issue has me a little concerned. I have been pushing Zimbra for about six months at my company as a replacement for our current Linux-based POP3-only email server. I have finally started to make some headway, and it looks as if we may start the migration to Zimbra soon (OSE, at least initially). When the migration is complete we will have somewhere in the range of 400 email users.
When I has having the problem with email getting stuck in the queue my only guess of the cause was that ZImbra was simply being overwhelmed by an extremely high volume of messages. Although I have fixed the problem, I am worried that once I have all the users migrated over, and there is a pretty high volume of messages that Zimbra won't be able to keep up.
I am planning on using a dedicated server for Zimbra. It has dual Xeon 3.4 GHz processors, with 2 GB of memory.
I'm looking for some feedback about what I can expect with my proposed environment.