And the answer is no. It looks like the function calls the mail server on X
port and waits for a HELO or the equivalent.
At 11:00 AM 8/17/01, you wrote:
>I really have no clue as to how this works internally. The test is if your
>mail server shows up in the administrator then the function will work for
>it. Basically, this is the function used in the admin to do that check.
>My thought is that it does a tcp/ip request to the port specified. If so,
>then maybe it can also be used to specify if a server or service is running
>or not. Use it to check if an FTP server is running on a machine.
>
>At 08:26 AM 8/17/01, you wrote:
> >Michael Dinowitz wrote:
> > > Checking that the domain exists is easy using the
> > > CFUSION_VERIFYMAIL(MailServer, SMTPPort, Timeout) function. It'll
> return a
> > > Boolean true or false id the mail server exists or not.
> >
> >How does this work internally? Does it do a DNS lookup and search for a
> >failover server if it can't contact the main server? Many mail domains I
> >know (e.g. most academic domains in the Netherlands) have a setup where
> >they block all incoming traffic on port 25 and provide a failover server
> >that acts as a smarthost for mail to be delivered to the network
> >(130.161.0.0/16 and 145.94.0.0/16 need to go through one server at my
> >Uni). This allows them to provide central spam blocking and antivirus
> >scanning, while the users can still connect to local servers. I would
> >however expect that you can not verify my email server, while it is a
> >valid and running server (try it).
> >Also, many servers don't accept SMTP connections from computers outside
> >a trusted domain that don't have an MX record. If your CF server does
> >not have an MX record but your SMTP server does, you might get a false
> >negative.
> >
> >Jochem
> >
> >
> >
>
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