Skc
Thu Oct 14 06:13:01 CDT 2004
Javier,
Do I simply phone my ISP, get their SMTP server address and plug it into the
'Use DNS to route e-mail' in ICW on SBS?
Do I need to tell my ISP to add our domainname (<domainname>.co.uk) to their
SMTP server in case they think that SPAM is going through?
Skc
"Javier Gomez [SBS MVP]" wrote:
> You might want to read the section titled "Pros and Cons of each one?" in
> the article I mentioned earlier:
>
http://www.sbslinks.com/DNS_Smarthost.htm
>
> ...and if you still have questions I would be more than glad to answer them.
>
> You don't need to ask your ISP to do anything, you just need the address of
> the server and authentication info (if required).
>
> --
> Javier [SBS MVP]
>
> << SBS ROCKS!!! >>
>
> "Skc" <Skc@discussions.microsoft.com> wrote in message
> news:FB2F9399-514C-4E40-A813-2F391A5928D2@microsoft.com...
> > Javier,
> >
> > What are the pros and cons of switching to Smarthost? If I call our ISP
> > and
> > get their SMTP address, do I need to ask them to add our domain name to
> > their
> > SMTP server as well? We are picking up mail from another ISP (POP3) and
> > sending out via our broadband ISP.
> >
> > Thanks,
> >
> > skc
> >
> > "Javier Gomez [SBS MVP]" wrote:
> >
> >> Hi skc!
> >>
> >> My guess is that you are being block because of the dynamic IP, open
> >> relay
> >> db or for not having PTR records (you can choose your ailment :-). I
> >> think
> >> you should contact your ISP if you are paying for a business account with
> >> static IP and you are not getting that.
> >>
> >> In any event... I would use your ISP as a smarthost to relay mail, so
> >> this
> >> kind of stuff doesn't happen.
> >>
> >> > Furthermore, although the SBS runs it's own SMTP service, am I sending
> >> > mail
> >> > out through the SBS or am I using the ISP's SMTP server? For the
> >> > latter,
> >> > I
> >> > do not know where I should plug in the ISP's SMTP server address.
> >>
> >> SBS/Exchange can either try to deliver the mail directly (using DNS) or
> >> relay it thru your ISP (smarthost). You are having problems most likely
> >> because you are using DNS. Here's a doc describing both methods (and how
> >> to
> >> switch to smarthost):
> >>
http://www.sbslinks.com/DNS_Smarthost.htm
> >>
> >> --
> >> Javier [SBS MVP]
> >>
> >> << SBS ROCKS!!! >>
> >>
> >> "Skc" <Skc@discussions.microsoft.com> wrote in message
> >> news:D94A7C01-BBDE-43BC-906C-C36D015C940C@microsoft.com...
> >> > Hi,
> >> >
> >> > We are in the UK using BT OpenWorld as our ISP. We are on Business 500
> >> > tariff.
> >> >
> >> > We are having problems sending out external email to a couple of
> >> > clients,
> >> > where we are getting smtp errors (commented out using<>):
> >> >
> >> > ___________________________________________
> >> >
> >> > The following recipient(s) could not be reached:
> >> >
> >> > ' (<recipient>)' on 13/10/2004 14:12
> >> > There was a SMTP communication problem with the recipient's
> >> > email server. Please contact your system administrator.
> >> > <<sbs servername>.<SBS domainname>.local #5.5.0 smtp;550 <IP
> >> > address from BT> is listed in the DNSBL at dul.dnsbl.sorbs.net and thus
> >> > is
> >> > considered unsolicited.>
> >> >
> >> > ______________________________________________
> >> >
> >> > Although we have NO NAT and 5 IP addresses, it seems that BT has put us
> >> > on
> >> > a
> >> > domestic account at their exchange as the IP address changes each time
> >> > we
> >> > drop the line and re-sync.
> >> >
> >> > In Internet Connection Wizard on the SBS Admin Console, I ran through
> >> > the
> >> > wizard to setup our router (specifiying the external NIC IP for
> >> > external
> >> > network etc...) and I cannot find the bit where you specify the SMTP
> >> > server.
> >> > I seem to remember in the past, BT changed their SMTP server and I went
> >> > into
> >> > a MMC somewhere on the SBS to re-plug this in - but I cannot find it.
> >> >
> >> > Furthermore, although the SBS runs it's own SMTP service, am I sending
> >> > mail
> >> > out through the SBS or am I using the ISP's SMTP server? For the
> >> > latter,
> >> > I
> >> > do not know where I should plug in the ISP's SMTP server address.
> >> >
> >> > Please help. As you can see, our domain, SBS machine name and our
> >> > email
> >> > domain-name are all different. Is this a possible reason why we are
> >> > being
> >> > rejected by this recipient - are they doing a reverse DNS lookup and we
> >> > are
> >> > failing somewhere? In which case, how can we test and how can we put
> >> > this
> >> > right?
> >> >
> >> > Thanks,
> >> >
> >> > skc
> >>
> >>
> >>
>
>
>