I don't see a problem with this, Matt. The only way you could be more secure would be if you had a separate server for your mailstore from the one that handled your webmail, and that's normally only...

No, I'm afraid that can only be done on the device that is doing the NAT service. If your router doesn't support SNAT (and many don't), you are left with only four choices:

1) Hang your...

The simplest possible solution, and one that has often worked for me, is in this thread:
...

This is a pretty old security issue, back in the 4.x series. The user's profile says he's using 5.0.9, which is WAY beyond when this was patched, so it should not be an issue.

I did a whois on your ip address and got this result (partial):
I believe I have observed in the past that Yahoo!, Gmail, and some others automatically assume anything coming from a SMTP server...

I may be guessing too much, but in similar settings where I've set these things up, the problem has been that although you're port-forwarding INCOMING traffic, your OUTGOING traffic is going from a...

Actually there's something else you ought to look at. Notice this part of your SA headers:

Two realtime blacklists list your IP. Though you've whitelisted yourself, others who use those...

Well, sure, this at least means that my worries about you getting lumped with the spammers for a shifting IP should not be a problem. But again, you'll have to set up the MX records on DynDNS; those...

Hey ejecthunter,

I'm afraid I won't be much use to you; as I said to the other poster, I haven't actually set up a DynDNS -based Zimbra myself, I merely pointed out those wikis. All my own Zimbra...

Mike, as to syncing your mobile, that's not entirely true. I have FOSS and two different kinds of users sync to it. One, Blackberry users with BIS sync using BIS-thru-webmail, and two, Windows...

You are quite right, Mark, that DR is the weak link in local hosting. My two clients have responded differently to the same instructions from me. One of the two has a backup box in a separate...

Again, Mark, you're selling the SMB short I think. I have two different companies running ZCS FOSS--one on surplus IBM x330s that I bought (five at a time) for about $150 each--I have...

With all due respect, Klug, NO.

I have hosted ZCS FOSS on a small business network that has ranged from 15-30 users depending on the economy & employment, for nearly three years (I think) now, and...

I've always used /opt/zimbra/conf/spamassassin/local.cf as the place to make those changes, rather than the file you mention; however, as I understand it either should work. I don't know why your...

Take a look at your header, Kazu. I'll reproduce it here without the distracting stuff:

X-Spam-Status: No, score=4.121 tagged_above=-10 required=6.6
tests=[BAYES_99=3.5, HTML_MESSAGE=0.001,...

Unfortunately, Kazoo, I don't use DSPAM at all, so I really can't comment on why it does what it does. I've stuck to the RBLs and SpamAssassin, and that combination has served me well enough I...

That's not the file where they are. local.cf is the last file parsed, so any tweaks you put in there (your own custom stuff) overrides the settings in any of the other SA files, but you won't find...

Hey Kazoo,

As I'm sure you know, the spam engine scores mail on the basis of various header and/or content. I'm not at a Zimbra machine at the moment to check, but I would have thought there's a...

A quick google suggests that IMAP4 is backwards compatible with IMAP2, so 4 would be my first choice based on that. For the actual guts of Zimbra I'll defer to the people who understand...

Don't recommend you run Ubuntu Desktop on your server, if that's what you're suggesting. The mail server will function best if you're not wasting CPU power on X-Windows or any other graphical bits. ...

The source IP doesn't matter for INCOMING mail, only for outgoing. Incoming mail (that is, your CRM server is checking for mail received by Zimbra, right?) just needs to have the appropriate routing...

There's definitely the possibility of a firewall issue. Have you checked that port 993 (which is the SSL POP port) is open on your firewall? Have they on theirs?

I'm a little confused what you're trying to do here. username@server.domain.com and username@domain.com are functionally identical. I understand from your other thread that they're actually...

If you're seeing this happen you must be using the cron that belongs to your Zimbra user? I have my necessary cron jobs--this one and the backup itself, as well as fetchmail for a bunch of accounts...

Got it. In other words, you are experiencing the exact same problem I am. Nice to know I'm not alone...:(