Hello.,

right now i have clients sending to mail.there-domain.com and for smtp server i have them using there own smtp servers ( provided by isp ) I want to setup an smtp server but not sure how to do this. Now under dns my name is set to Cname wondering if i add smtp to cname and ip would it work. then under mail system management set smtp?

You would like them to be able to use your domain as an outgoing SMTP server?

If so, you need to make sure that Server->Mail->Relaying has the "Require Authorization" checked for POP3 and SMTP, then specify a lock time. This will allow them to relay through your server after they login via POP for the amount of lock time specified (after each login, of course).

However, other than that, no changes are needed as long as they are using mail.domain.com for their server settings. It may require some settings changed in their clients, though.

-N

Cool. Will the smtp be mail.yourdomain.com or smtp.yourdomain.com ??

By default mail.domain.com, but you can setup smtp.domain.com for them through the DNS tab for the domain. Just duplicate the record for mail.domain.com changing the 'mail' part to 'smtp'.

Clients can use any address for outgoing mail, as long as DNS resolves it to your server. If the web pages come up at "example.com", then they should be able to use "example.com" as their SMTP server. If they have a "mail.example.com" DNS entry, then it's a little more slick to use that, but it all works the same. Even using the bare IP address should work.

I'll repeat the adminition about turning off relaying. The "POP" authentication option works pretty well, it allows them to send after they've checked their mailbox. The nice thing is, it works with all mail clients, no configuration needed by the users.