I have a client on my VPS that has a wireless internet business and he will be giving out email addresses to his customers to use. Is there anything special I need to do security wise since I will have more email traffic in the next couple of months than I have now? or anything else that I need to do to prep for this?
Need to screen for spammers in some way.
BTW I did get your ticket but was driving to Texas at the time and could not answer.
Then I got home and within a few hours DSL went down and I was retricted in the last 36 hours to a 600ms+ ping time and less than 14.4 speeds mobile broadband that was hoping across cell phone towers to find a link to the internet as the local telco t1/t3 access lines were all down 
How do I screen for spammers? It would be nice if SpamAssassin would be working by then (JWVPS#DEO-n7U0p-660).
When I had to call the AE All Access Pass line (for work) which is located in FL their phone sys was messed up because of the storms.
SpamAssassin won’t screen for outgoing spam, what I mean here is that you want to keep spam from being SENT not from coming in. Anyone that does/has tried a free email will get hit with spammers, you may end up with wifi points having spammers sitting at them spamming away through the mail server(in return your server and your IP assigned, and in turn ours and our networks).
As for that ticket about the spamassassin, still working on it.
There is not much spamming issues in SW Nebraska.
Do I just need to watch email logs or is there some program I can install to monitor the hmail for spammers? I have SPF set up on all the domains.
Little confused.
You’d be surprised what lengths spammers will go to spam 
I am not sure about with the mail server you use what you can do, on qmail we have a spamguardian that limits the amount of mails per day until you ad to an approved list, that doesnt kill spam,but it really limits what they can do.
I’ll ask over at the hMail forum. I do have hMail set up to only allow 200 emails at a time.
I got an answer on the hMail forum and there is no way to control outgoing emails like you suggested Stephen. They did tell me to lower the maximum recipients in a batch to 100 though.
I think that Maximum Recipients in a batch was what you were talking about Stephen.
Maximum number of recipients in batch
SMTP servers may reject messages from hMailServer if there are too many recipients for a single email. This may happen if the receiving SMTP server thinks that your email message is spam because you are sending it to a large number of users. Use this setting to limit the number of recipient hMailServer uses in the same delivery. When this number has been reached, hMailServer will disconnect from the recipient server, connect again and continue with the remaining recipients.
Actually ours is 100/day period 
if you really want to limit that, whic would be good you’d be best around 30 per batch.
I got things confused. I can set the maximum number of simultaneous connections too. Right now it is set for unlimited. What should I set that at?