Re: smtp to my isp (demon)



In news:C10A2481-7FE4-4D5E-AF48-8CE928ED32A4@xxxxxxxxxxxxx,
Colin <Colin@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
Hi,

I have been doing a little more searching and it seems that ping and
telnet tells you alot. I am able to ping post.demon.co.uk, however
telnet will not connect with using port 25. This then would point me
to the firewall. I have the firewall on the internet and email
connection wizard, plus a firewall on the adsl router. I have tried
turning the router's firewall off, telnet will still not connect. I
have tried turning off the SBS2003 firewall, still no joy. I have
even turned both off with no joy (both back on now).

Demon do not block port 25 (tested this on the old server). Can you
offer any suggestion on where to look as I am about to order a new
wall for me to bang my head on it!.

But if the only thing you changed is your server, I'm not sure how this
could fail to work.

Can you successfully telnet to that server on port 25 on a
LAN-connected workstation?
Can you successfully telnet to anything SMTP server outside your network
on port 25?
Are you 100% sure your hardware appliance doesn't block any outbound
traffic?

I'm leaning towards this the firewall on the server. I personally know
nothing about it, can't see that it would block outbound traffic, but I
probably wouldn't use it anyway...either use ISA (if you have SBS Premium)
or get a very good hardware firewall appliance as a perimeter device; not
just a NAT router.

Anyway, depending on the results above, try running the CEICW again to
disable the SBS server's firewall, and test again. Do not under any
circumstances do this without having something else protecting your network,
even for a nanosecond!



Thanks
Colin
"Lanwench [MVP - Exchange]" wrote:



In news:7136FACA-39DD-415C-A3CE-058866ED520A@xxxxxxxxxxxxx,
Colin <Colin@xxxxxxxxxxxxxxxxxxxxxxxxx> typed:
Hi All,

I have complated the email internet wizard and most work fine:
Internat access, ineternal email bteween clients, POP3 from my ISP,
however SMTP will not connect and send my emails. I have checked the
settings in Default SMTP virtual server, I have also checked the
settings in Connectors, they seem to be correct as per the demon
website.

I can not find an error message in Event Viewer indicating a
failure. The outgoing emails are being generated as these are being
held in the queues section within
exchange/servers/companyserver/queues.

Any help would be very much apreiahted (plus outgoing emails are
building up!) Colin

In Exchange System Manager, if you find the queues, you ought to be
able to see the status/error/whatnot. Does your smarthost require
authentication?


.

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