Troubleshooting
Some ISPs block outgoing email that isn't delivered through their own mail servers. This can help prevent spam but it also stops you from using your mailbox.
Outlook and Outlook Express sometimes present the error 0x800CCC0F.
This error means that the connection between your computer and the server has been interrupted. It is usually caused by a faulty network connection or an overly protective firewall.
Check your internet connection
You may be able to resolve the problem by checking your:
LAN connection (if applicable) - ensure your router/switch is correctly sending traffic to your PC.
Hardware firewall - ensure your firewall is configured to allow traffic through ports 110, 25 and any other ports your email software uses.
Wireless connection (if applicable).
Internet connection - check your ISP's status page.
Modem/router - rebooting or reconnecting may solve the problem.
Anti-virus and firewall software
Anti-virus and firewall software is a common cause of this problem. Follow your anti-virus/firewall provider's instructions to allow internet access, including email.
Warning: We do not recommend that you disable virus and firewall software.
Other possible solutions
Remove your email account from your software, then set it up again. Remember: back up your email and contacts first.
Reduce the frequency that your email software checks your mailbox.
Check that your MTU size is correct.
Reboot your machine.
Help from Microsoft's knowledge base has further information on Outlook (Express) errors and possible solutions:
http://support.microsoft.com/?kbid=813514
If you report an email problem to Biz-hosting Technical Support they may ask you to send them a copy of the offending email's headers. These contain a log of the email's passage across the Internet from the sender to the recipient.
The header text looks like this:
Received: from mail.fasthosts.co.uk (www.fasthosts.co.uk [213.171.192.201]) by exchange.fasthosts.co.uk with SMTP (Microsoft Exchange Internet Mail Service Version 10.11)
id 409DRQ9A; Thu, 17 Oct 2002 14:48:00 +0100
Received: from SMTP32-FWD by fasthosts.co.uk (SMTP32) id A000000EF; Thu, 17 Oct 2002 14:48:00 +0100
Received: from vrsmailfilter02 [213.171.193.102] by mail.fasthosts.co.uk
(SMTPD32-6.00) id AF8FD8A0296; Thu, 17 Oct 2002 14:47:59 +0100
Received: FROM mail-scanner-02.fasthosts.co.uk BY vrsmailfilter02 ; Thu Oct 17 14:53:21 2002 +0100
Received: From [193.113.209.26] by mail-scanner-02.fasthosts.co.uk
(Matrix SMTP Mail Server v(1.3)) ID=B598D17A-8E6F-4B4B-8495-CA454F29012C ; Thu, 17 Oct 2002 14:53:14 +0100
Received: from [192.168.1.10] (actually host host213-122-82-211.in-addr.btopenworld.com) by c2bapps5 with SMTP-CUST (XT-PP) with ESMTP; Thu, 17 Oct 2002 14:47:31 +0100
User-Agent: Microsoft-Outlook-Express-Macintosh-Edition/5.02.2022
Date: Thu, 17 Oct 2002 14:03:32 +0000
Subject: Re: Account 41893
MAILER-TRACE: 0
From: Sam Smith
To: Support
Message-ID:
In-Reply-To: <040BC5194880BA4DBAF15C0C9D5A11BA671849@fasthosts.co.uk>
Mime-version: 1.0
Content-type: text/plain; charset="US-ASCII"
Content-transfer-encoding: 7bit
X-RCPT-TO:
Procedure
Using Outlook Express:
Open Outlook Express.
Right-click on the appropriate email and select the Properties option from the menu that appears.
Click on the Details tab. The email's headers are shown in a scrollable box called Internet Headers.
Highlight all of the header text in the box, and press Ctrl-C to copy the text onto the clipboard.
You can now paste the header text into the body of an email and send it to Biz-hostings Technical Support.
Using Outlook:
Open Outlook.
Right-click on the appropriate email and select the Options item from the menu that appears. The email's headers are shown in a scrollable box called Internet Headers.
Highlight all of the header text in the box, and press Ctrl-C to copy the text onto the clipboard.
You can now paste the header text into the body of an email and send it to Biz-hostings Technical Support.
This article specifies the limits on the size of an email attachment and explains why you might not be able to send an attachment.
Email attachments sent through your ISP's SMTP server may be limited for any single email. Any email with attachments in excess of this limit, will be rejected. Visit your ISP's website for further information.
Customers needing to send attachments large attachements are advised to compress large files to within a reasonable limit; or to split the attachment into several part and to send each part in a separate email.
There is a 5 MB limit on the size of file attachments that can be received by a mailbox hosted by Biz-hosting. Any email with an attachment exceeding this 5 MB limit will be returned to the sender as undeliverable.
Customers who connect to the Internet with AOL will not be able to use AOL's Outgoing Mail Server. This is because AOL use their own proprietary system.
Solution 1: Change your Internet Service Provider (the person you use to connect to the Internet). Generally other ISP's allow their customers access to their Outgoing Mail Servers (SMTP).
Solution 2: Upgrade a mailbox on yourdomain.co.uk to an Advanced mailbox which includes roaming SMTP. This will provide you with your own SMTP server, eg. smtp.yourdomain.co.uk. Contact biz-hosting for further details of how to upgrade to an Advanced mailbox.
Before you can use a third-party domain name with the BT Business mail servers, you first have to contact BT's technical helpdesk to have the domain added to our secure lists.
Contact BT to apply for mail relay authorisation:
This will allow you to send email from your domain name through BT's server, without actually transferring the domain name to BT. To add your domain to the mail relay list, you must contact BT's technical support desk. BT's agents will perform a WhoIs check to verify that you are the rightful owner of the domain name and add it to your account for e-mail relay.
BT apologise for any inconvenience that this process may cause, but you will appreciate the importance of ensuring the security of mail servers which are critical to our customers' business needs.
When setting up your email client, eg. MS Outlook, MS Outlook Express etc, you must enable SMTP Authentication. See Article Setting up SMTP Authentication for further details.
Spammers use many tricks to avoid being caught by spam filters and law enforcers.
If you notice that spammers are sending email that appears to come from your domain name, this could be either:
email spoofing
an unsecure contact form script on your website.
Email spoofing
Email spoofing is where spammers make their email appear to come from a legitimate source. For example, if your domain name is catchgate-decorating.co.uk, you may see email that seems to come from arthur@catchgate-decorating.co.uk or any other email address using your domain name. his doesn't mean that someone has access your mailboxes. Instead, the spammer has made it appear that his/her email comes from you.
All emails have hidden information, called headers, that describe where they've come from and say where they're going. Spammers can fake an email's headers so that it appears to come from your domain name.
Groups of industry experts are working to resolve the problem but, in the mean time, this is a situation that all internet users have to bear.
Unsecure scripts on your website
Spam may come from your domain name if you have an unsecure contact form, or other script, on your website.
Spam and virus protection on a standard mailbox.
To add spam and virus protection to a Standard mailbox, you need to upgrade it to an Advanced mailbox, which also gives you increased mailbox storage space and roaming access to our SMTP servers for sending email.
This article applies to users who send emails using Biz-hostings' SMTP servers, eg users with Advanced mailboxes and users sending email from the Webmail interface.
To ensure a high service level for all customers, and prevent spam, we limit the amount of email that can be sent in one session.
This enables us to:
avoid having email sent from our servers automatically flagged as spam
ensure all customers have equal access to server resources
make it more difficult for spammers to operate.
We don't want to prevent you from sending legitimate email to willing recipients.
Understanding our mail sending limits
We automatically delete any outgoing email that isn't from our customers. All outgoing email is also passed through our standard spam filters.
Additionally, we limit:
the number of emails that can be sent in a thirty second period
the number of emails that can be sent in a ten minute period
the number of recipients an individual email can have.
Email sent from our web servers (eg. Webmail interface)
All email sent from our web servers is seamlessly handled by our outbound SMTP servers. You cannot access external mail relays from scripts hosted on our web servers.
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