Re: Reason for mail sending fails ???

Here is what I get when I set my ISP mail server in SMTP connector

serge.calderara@xxxxxxxxxxxx on 11/13/2008 23:45
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<solatys.com #5.5.0 smtp;503 This mail server requires authentication when
attempting to send to a non-local e-mail address. Please check your mail
client settings or contact your administrator to verify that the domain or
address is defined for this server.>

Any idea where I can set this authentication ?
"Les Connor" wrote:

Nevermind - I see the issue is probably the public IP range you're on, and
smarthost instead of _via DNS_ should resolve the problem. You only need to
discover your ISP's mail server IP and use that as the smarthost.

--
Les Connor [SBS-MVP]


____________________________
"Les Connor" <les.connor@xxxxxxxxxxxx> wrote in message
news:O4w%23yxdRJHA.1144@xxxxxxxxxxxxxxxxxxxxxxx
Spamhaus doesn't black list for no reason. Click on their link in that
NDR, and they can help you determine the problem.

Smarthost will only transfer the problem, as you'll have your smarthost
(ISP) screaming at you next ;-/.

--
Les Connor [SBS-MVP]


____________________________
"calderara" <calderara@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:47BE63AD-51AB-4E7E-A10E-3FD1C5EE515A@xxxxxxxxxxxxxxxx
HI Brian, thnaks for youir reply
I guess even its along time you have not setup a sbs I think we are nealr
yon the right dirtection..
It is absolutly tue that time to time, some reciepient receive there
email
and sometime not..And now that you are talking about black list for most
all
home network IP...hmm I guess we nearly reach the point becasue today I
just
try to send an email to a guy that I am sure the adress is valid and here
is
what I get in return :

The following recipient(s) could not be reached:

john.mccormack@xxxxxxxxxxxxx on 11/13/2008 22:15
The e-mail system was unable to deliver the message, but did not report
a
specific reason. Check the address and try again. If it still fails,
contact
your system administrator.
< mail123-wa4-R.bigfish.com #5.0.0 X-Postfix; host
winse-6216-mail4.customer.frontbridge.com[131.107.115.212] said: 550
5.7.1
Email rejected because 91.172.8.39 is listed by sbl-xbl.spamhaus.org.
Please
see http://www.spamhaus.org/query/bl?ip=91.172.8.39 for more information.
(in
reply to end of DATA command)>

And of course I am sure about this adress.
WHat I have verify if the config of my SMTP connector and as I did not
change anything here, default settings is :
(*)Use DNS to route to each address space on this connector

So as I do not have a fixed IP adress, it means I have to use the other
option
(*) Forward all mail through this connector to the following smart hosts
right ?

And what should I place in ? same format as If I were setting the smtp
account on a normal email client ?

regards
serge


"Brian Cryer" wrote:

"calderara" <calderara@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:26E52AC0-F30F-45EF-A9C2-43BE87558483@xxxxxxxxxxxxxxxx
If POP 3 connector is only use to recieve email, how my email can be
delivered to my private mail box from my laptop outlook client through
my
exchange server ?

What do you mean by smarhost ???

SBS has two ways of sending email:

The first is for each email SBS (or rather Exchange - the software
running
on SBS) does the delivery itself. So it looks up the domain that the
email
goes to, tries to contact the email server at that domain to deliver the
email, and retries if it was unsuccessful.

The second is to use a "smarthost". A smarthost is simply a way of
delegating the delivery to another server. Typically the smarthost is
set up
to point to your ISP's SMTP server. Each time you send an email that
email
is forwarded to the smarthost (i.e. your ISP) for delivery.

Out of the box I think it doesn't use a smarthost (but its been a while
since I last installed SBS). Somewhere along the way it may ask if you
want
to use a smarthost, so if you entered your ISP's SMTP server then it
might
be otherwise it won't.

However, in order to tell for sure which you are using try this:

Start > All Programs > Microsoft Exchange > System Manager
Expand "Connectors"
Right click "SmallBusiness SMTP connector" and select "Properties"
On the "General" tab you will have one of the following selected:
( ) Use DNS to route to each address space on this connector
(*) Forward all mail through this connector to the following smart hosts

Why might you want to use a smarthost? There are other reasons but
typically
its if your IP address is on one or more blacklists (which it may be if
its
a dynamic or domestic ip for example). A smarthost isn't always a good
idea,
for example where I am now we don't use a smarthost because our ip isn't
on
any blacklists (afaik) whereas our isp's smtp server is.

I think that answers both of your two questions.

Sorry for basic questionbut I am not familar with all this

Not a problem.

Now, my best guess a the cause of your problem:

I suspect that you are not using a smarthost, but your Exchange server
is
sending out emails itself. Since (in a reply to Russ) you mentioned that
your SBS server is at home it is quite likely that your home IP address
is
on one or more blacklists. Some blacklists list IP addresses that are
allocated for home internet connections. (The rational being that most
home
users don't send emails directly but via their ISP so any emails coming
from
a home internet connection are more likely to be spam.)

If your IP address is on a blacklist then some recipients will receive
your
emails whilst others won't. Whether or not they receive your email
depends
on which blacklists their email system uses.

The work around is simply to enable a smarthost and get your Exchange
server
to use your ISP's STMP connection - this is the same connection that you
will have used before you installed SBS.

Hope this helps.
--
Brian Cryer
www.cryer.co.uk/brian





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