Error - 553 Domain isn't in list of Allowed rcpthosts

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Dave L

Hi,

I have a laptop PC running Vista and Outlook 2007. I send & receive email

through my own domain, hosted by a third party. The domain has inexcess of

40 email accounts set up on it used by my collegues. All outlook

configuration settings are the same for all users, excluding mailbox account

passwords. STMP authentication is configured as per the domain hosting

company's instructions for all users. I connect to the internet using "BT

Broadband". I am able to recive email with no problems. I can send email to

most recipients with no problems.

At the time of writing I have found 4 email accounts that I am unable to

send email to all of which belong to different domains. 1 of the accounts is

on a domain hosted by the same company as my domain, 1 is a "BT Broadband"

email account.

When trying to send to these 4 accounts I get an "bounce back" with the

above error message. However the bounce back arrives very fast. In most

cases I would expect to have to "send/recieve" twice, once to send the email

and once to receive the bounce back, but this arrives almost as soon as the

email is sent, as if it is being generated by Outlook itself.

Other users from my domain are able to send emails to accounts that I cannot

which would indicate that my domain is NOT being rejected by the recipient's

SMTP servers. I know of other people who have domains with the same hosting

company and use a BT broadband connection and can send email without issue,

so that rules out BT preventing "off-domain" mail hosts.

I have searched google and these forums for a solution but the responses I

have found refer to SMTP authentication, which I know is set correctly,

rejection by recipient servers, which appears not to be the case, and

"off-domain" mail hosts which again I have tested for.

Can anyone shed any light for me?

Thanks

Dave
 
T

Tom Willett

Probably now, since you've snipped the question/problem from this email.

BTW, if you Google for the error, you'll find the answer.

"Dave L" <DaveL> wrote in message

news:D984A234-47D0-41B5-AA93-FB3C385C0A77@microsoft.com...

: Have I stumpped everyone???
 
D

Dave L

Maybe, if you had bothered to read my original post you would have seen that

I have already searched Google and this message board. So perhaps you would

like to try to be a bit more helpful next time instead to just being a smart

arse!!

"Tom Willett" wrote:


> Probably now, since you've snipped the question/problem from this email.
> BTW, if you Google for the error, you'll find the answer.

> "Dave L" <DaveL> wrote in message
> news:D984A234-47D0-41B5-AA93-FB3C385C0A77@microsoft.com...
> : Have I stumpped everyone???

>
 
W

William

On 22 June, 13:54, Dave L <Da...> wrote:
> Hi,

> I have a laptop PC running Vista and Outlook 2007.  I send & receive email
> through my own domain, hosted by a third party.  The domain has inexcess of
> 40 email accounts set up on it used by my collegues.  All outlook
> configuration settings are the same for all users, excluding mailbox account
> passwords.  STMP authentication is configured as per the domain hosting
> company's instructions for all users.  I connect to the internet using "BT
> Broadband".  I am able to recive email with no problems.  I can send email to
> most recipients with no problems.

> At the time of writing I have found 4 email accounts that I am unable to
> send email to all of which belong to different domains.  1 of the accounts is
> on a domain hosted by the same company as my domain, 1 is a "BT Broadband"
> email account.

> When trying to send to these 4 accounts I get an "bounce back" with the
> above error message.  However the bounce back arrives very fast.  In most
> cases I would expect to have to "send/recieve" twice, once to send the email
> and once to receive the bounce back, but this arrives almost as soon as the
> email is sent, as if it is being generated by Outlook itself.  

> Other users from my domain are able to send emails to accounts that I cannot
> which would indicate that my domain is NOT being rejected by the recipient's
> SMTP servers.  I know of other people who have domains with the same hosting
> company and use a BT broadband connection and can send email without issue,
> so that rules out BT preventing "off-domain" mail hosts.

> I have searched google and these forums for a solution but the responses I
> have found refer to SMTP authentication, which I know is set correctly,
> rejection by recipient servers, which appears not to be the case, and
> "off-domain" mail hosts which again I have tested for.

> Can anyone shed any light for me?


BT have a number of different mail services, some historical and some

current, covering both domestic and business customers. The rules

applying to these services vary from account to account and server to

server. Evwen within a particular service, BT may be inconsistent in

how the rules are applied.

There certainly are some BT services where "off-domain" mails are

prohibited. Most of the business acounts apply this rule. To get

around the issue, you need to contact BT and have them add the domain

to their lisat of approved names. They will need you to priove that

you are the owner of that domain. Usually they do this by checking

that the domain details match your BT account details.

Even if the above is not the cause of the problem, it is worth doing

to eliminate a source of future issues. Without doing the above, you

may have difficulty sending to other BT domains.

You say that secure aurthentication is set correctly. Is it on or off?

And are you authenticating against the main account details or the

user mailbox details.

Good luck!

WH
 

Brian Tillman

Senior Member
"Dave L" <DaveL> wrote in message

news:E6F1139D-A4F5-4D00-8B5A-7B26268E6BBC@microsoft.com...


> I have a laptop PC running Vista and Outlook 2007. I send & receive email
> through my own domain, hosted by a third party. The domain has inexcess of
> 40 email accounts set up on it used by my collegues. All outlook
> configuration settings are the same for all users, excluding mailbox account
> passwords. STMP authentication is configured as per the domain hosting
> company's instructions for all users. I connect to the internet using "BT
> Broadband". I am able to recive email with no problems. I can send email
> to
> most recipients with no problems.


That message indicates that you aren't properly authenticating to the outgoing

server. In general, the SMTP server you use must reside in the domain of the

service you're using to connect to the internet. Apparently you're not using

the network your SMTP server is expecting so it's rejecting your message as a

relay. Describe exactly how you have your account configured and what network

you're using when you try to send.

--
 
S

srikannan

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srikannan

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