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I'm installing the current version of SmarterMail on a Win 2003 server. When I type in the hostname for the mailserver in the "Generel Setting">"Server info" SM gives med the reply "The Hostname should be a fully qualified domain name (eg. mail.example.com)".

My problem is that the name typed is:

1. A fully qualified name
2. Resolves in DNS on A, MX and PTR

Because of this error we're not able to get helo from the server and receive email. 

What could be wrong?

 Your hostname is fine. Don't bother about that msg., it seems to be only a notice.

Did you already set up a domain host? You have to to this and bind it to a ip/port, otherwise you won't be able to connect (happened to me also).

I've added Hostname/IP in "Settings">"Hostnames" with the hostname used  - is there somewhere else I should add this?

 do you have at least 1 active host under "manage/domains"?

Yes, so fare it's a free version with 1 domine active. I'm testing this before I convert from an old 3.3 version with about 200 differnt domains and several users.

I can't get in touch with the mailserver on port 25 - and I expect that the setting for the hostname is the prolem..

 dont try to do a "telnet localhost 25" from the local cmd prompt, that won't work until you have a domain running on 127.0.0.1.

 sdi is correct on all accounts. That message is informational only, and does not mean that your hostname is incorrect.

Make sure you're telnetting to an IP that SmarterMail is listening on. Edit the domain you have set up to see which IP it is using.

I'm sure that I'm telneting to mail1.amarweb.dk - but but I'm also sure that SM isn't listening... I tried to start the SMTP in IIS and got Helo from IIS.. I need however SM to start replying.

Is there some SM parameters that should be set? 

Even "internal" telnet on the server doesn't responsed. ie telnet mail1.amarweb.dk 25 or 195.69.131.32 25

If I do the same test on our production server (running SM3.3) I'll get my 220 - but the new server with SM5.5 doesn't repond at all. 

 consider changing the iis-smtp port for testing purposes. Maybe the iis-smtpd is not allowing smartermail to connect to the ip.

Have a look at this also: http://www.smartertools.com/forums/p/11116/21579.aspx#21579

 Just tried the suggest - sounded to be a very good idea. But still no answer from SM5.5

Changed IIS port to 5000 and started SMTP in IIS (up until now it's only been started for the telnet test)

Now I can telnet a mail1.amarweb.dk 5000 - but mail1.amarweb25 still without response..

In a command prompt, type "netstat -abnp tcp" Do you see any entries for MailService.exe? Is anything at all listening on port 25?

As the system admin, view the Services page. Is SMTP started?

Nothing is listing on port 25.. why isn't SM listening 

Is there anyway to check SM setting - any idea on why SM should not listen on 25 - no one seems to prevent this.

SMTP was not started to begin with - i realy don't need that - but ased on the good suggestion from sdi I changed the port of SMTP to 5000 - and started it..

What can prevent can prevent SmarterMail from listening on port 25 ??

Did you restarted SmarterMail Service after changing IIS-SMTP Port?