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Exchange SMTP ERROR

Posted on 2009-07-16
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Last Modified: 2012-05-07
Small Business Server 2003
Exchange SMTP ERROR

I set this server up in my office and both incoming and outgoing were working fine.
I have setup the SMTP as "Use DNS to route to each address space on this connector"
I have to 2 POP 3 Connector setup
1 for myself as a user
1 for a catchall email collection and these are working fine.

However now when I try to send email it just gets stuck in the "SmallBusiness SMTP Connector"
In the additional Queue information "An SMTP Protocol error occurred"

Any help
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Question by:Bransby-IT
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by:Mestha
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Could be any number of reasons. Did you configure SBS to use a smart host?
If not, then you should do, as you are not receiving email directly. Run the Connect to the Internet and Configure email wizard and change it to use your ISPs SMTP Server for outbound email.

Simon.
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by:Bransby-IT
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OK is there a way of getting rid of the outbound SMTP or will this change once I do this again?
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by:Bransby-IT
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Were using fasthosts for our domain.

smtp.fasthosts.co.uk
but we need to put an authenticate by email address
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by:Mestha
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Can you not use your ISPs SMTP server? Fasthosts is not an ISP, they are a hosting company (and a pretty poor one in my experience).

To be able to send email directly you must be on a static IP address, with the ISP setting a valid PTR record on the IP address. If you are going to do that then you may as well get your MX records changed and pointing directly to the server and stop using the POP3 connector.

If you are not on a static IP address then you will have to use a smart host from someone because most sites will not accept email delivery from a dynamic IP address.

Simon.
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by:Bransby-IT
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Yes I have just setup a smart host using my own domain from 1and1, they require basic authentication on outlook when setting up just a username and password of one of there accounts, how do I do his in the smtp connector
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by:Bransby-IT
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There ISP is BT
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by:Mestha
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You can probably use BTs SMTP server, but you will need to speak to BT about that. From memory I believe BT need to know what your domain is before you can use their servers. I try to have as little as possible to do with BT, I find it keeps my blood pressure down.

If you want to authenticate when sending email, after you have setup the connector through the wizard, go in ESM, Connectors. On the properties of the SMTP connector choose the Advanced tab, then the outbound security button and enter the credentials.

Simon.
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by:Bransby-IT
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Yes I have just used BTCLICK as the SMTP but it rejects the email address im sending it from.

what is the best way to do this? It worked with DNS when I set it to use individual POP connections
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by:Mestha
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You will get some email delivered by DNS if you are on a dynamic IP address, but not all.
The options are only what I have outlined above - if you are on a dynamic IP address then the only way to get all email delivered is via another host.

Simon.
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by:Bransby-IT
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We are on a static IP address.
I would like to use DNS which worked in my office but not in theres?

I have contcted BT but the domain registration is not there company address so I have changed this but how long it takes I have no idea.

I have my own domain with 1and1 cant I setup a smart host with this company.   Although domain name is on fast host I thought I could use my domain name as a smart host.

The is a bit on fasthosts site about 3rd party but I dont understand it.   I cant find it now though.
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Mestha earned 500 total points
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If you are on a static IP address then you need to contact BT and get a reverse DNS/PTR record setup. This is usually done by sending an email to a certain location. The reverse DNS will be in the form of mail.example.com - where mail.example already points to your static IP address.

Simon.
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