Quote:
Originally Posted by yacahuma  Thanks for the link. Will it still apply in my case?
there will be no connection from the outside world to the zimbra server. The users will connect to the zimbra server to read and send email(maybe) and the zimbra server will communicate with the external pop.smtp server to download the emails. |
Well, at the very least the Zimbra box will have to be able to SMTP to the outside world, because otherwise it's MTA is locked. See below. You may also want to let your users https into the zimbra box to check their mail from outside.
Quote:
Originally Posted by yacahuma Should the users send email through the zimbra server or talk directly to the external smtp server?? How doe sit affects the configuration? |
I'm sure you can find alternative opinions on this; my own opinion is that, since your users are already logged into the zimbra server to check their mail, you want them to be able to reply. Those messages are going to the outside world as
whoever@yourzimbrabox.net. Since people "out there" are going to want to reply also, you need to allow incoming SMTP to your Zimbra server, which means it has to have a fully-qualified domain name that is registered with a public DNS somewhere as well.
To the best of my knowledge, you can't set up Zimbra to relay through an outside SMTP server so as to appear to have all messages coming from that other domain. This is primarily because the ISP that is hosting your other domain probably has check-before-send authentication on their own SMTP relay, and when your Zimbra's fetchmail is retrieving all your email, the check-before-send timing is probably not going to work for outgoing mail.
It may be worth asking Zimbra to come up with a way to authenticate SMTP in situations like this--I've seen others asking for it, but it may well be easier just to gradually migrate your users and your customers/contacts to the new domain. The simplest form of this is to take your current whatever.com domain and register a corresponding whatever.net which you then point to your zimbra servers. At least that's what I did.
Dan