Understand Email Error Messages and their Codes
Updated
5/2/2013 2:31:16 PM
by
Comcast Expert
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Introduction
When sending email, you'll occasionally receive an error message with its own code. Here's an explanation of the codes—along with a recommendation on how to fix each error. Note: In the event you need to contact your email administrator, be sure to include your error message. It contains important information.
Choose the error message you received from the list below:
ES000001 You are sending email from a dynamic/residential IP address. We don't allow subscribers to send email from a mail server other than smtp.comcast.net. You can send or receive email through the Comcast mail servers by using our webmail application or by
configuring your mail client to connect properly. If you need to run your own mail server, please contact our Commercial Services organization at
support_biz@cable.comcast.com.
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ES000010 You are sending email from dynamic/residential IP space. We don't allow residential/dynamic IP addresses to directly connect to our mail servers. Comcast classifies your mail server's IP address as dynamic if the reverse DNS does not comply with standard static naming conventions. You can ask your mail provider to review the settings of your email server to ensure we don't continue to block it. If your mail provider cannot change their naming conventions, have its representative contact our CSA Department.
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BL000000 Email from your mail server has been sent in patterns that are characteristic of spam.
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BL000001 Your mail provider is listed on Spamhaus SBL/XBL, a list of mail providers who've been detected as having sent spam. Visit
Spamhaus to remove the block.
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BL000010 Your mail provider is listed on the Cloudmark Sender Intelligence (CSI), a list of mail providers who've been detected as having sent spam. Visit
CSI to remove the block.
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BL000011 Your mail provider is listed on the Spamhaus SBL/XBL and Cloudmark Sender Intelligence (CSI), two lists of mail providers who've been detected as having sent spam. Visit
Spamhaus and
CSI to remove the block.
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BL000100 Your mail provider is listed on SenderScore, a list of mail providers detected as having sent spam. Visit
SenderScore to remove the block.
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BL000101 Your mail provider is listed on the Spamhaus SBL/XBL and SenderScore, two lists of mail providers who've been detected as having sent spam. Visit
SenderScore and
Spamhaus to remove the blocks.
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BL000110 Your mail provider is listed on the Cloudmark Sender Intelligence (CSI) and SenderScore, two lists of mail providers who've been detected as having sent spam. Visit
CSI and
SenderScore to remove the blocks.
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BL000111 Your mail provider is listed on Spamhaus SBL/XBL, Cloudmark Sender Intelligence (CSI) and SenderScore, three lists of mail providers who've been detected as having sent spam. Visit
Spamhaus,
CSI and
SenderScore to remove the blocks.
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BL001000 Your mail provider is listed on TrendMicro MAPS, a list of mail providers who've been detected as having sent spam. Visit
MAPS to remove the blocks.
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BL001001 Your mail provider is listed on Spamhaus SBL/XB and TrendMicro MAPS, two lists of mail providers who've been detected as having sent spam. Visit
Spamhaus and
MAPS to remove the blocks.
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BL001010 Your mail provider is listed on Cloudmark Sender Intelligence (CSI) and TrendMicro MAPS, two lists of mail providers who've been detected as having sent spam. Visit
CSI and
MAPS to remove the blocks.
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BL001011 Your mail provider is listed on Spamhaus SBL/XB, Cloudmark Sender Intelligence (CSI) and TrendMicro MAPS, three lists of mail providers who've been detected as having sent spam. Visit
Spamhaus,
CSI and
MAPS to remove the blocks.
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BL001100 Your mail provider is listed on TrendMicro MAPS and SenderScore, two lists of mail providers who've been detected as having sent spam. Visit
MAPS and
SenderScore to remove the blocks.
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BL001101 Your mail provider is listed on Spamhouse SBL/XBL, TrendMicro MAPS and SenderScore, three lists of mail providers who've been detected as having sent spam. Visit
Spamhaus,
MAPS and
SenderScore to remove the blocks.
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BL001110 Your mail provider is listed on Cloudmark Sender Intelligence (CSI), TrendMicro MAPS and SenderScore, three lists of mail providers who've been detected as having sent spam. Visit
CSI,
MAPS and
SenderScore to remove the blocks.
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BL001111 Your mail provider is listed on Spamhaus SBL/XBL, Cloudmark Sender Intelligence (CSI) and TrendMicro MAPS, three lists of mail providers who've been detected as having sent spam. Visit
Spamhaus,
CSI and
MAPS to remove the blocks.
Mail servers are typically shared by many users so it may be the case that another party using your mail server has sent spam, even if you haven’t. Make your email administrator aware of its outbound spam problem to avoid being blocked by us in the future. Removal requests can be sent to
www.comcastsupport.com/rbl and will require the IP address of the blocked mail server (you can get this from your email administrator).
Below is an example of an error message and where you can find the IP address needed for your removal request.
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Additional Help
If you’d like hands-on assistance with error messages – or any tech problem – sign up for XFINITY Signature Support. Our premium help service, XFINITY Signature Support connects you with live experts who’ll do more than answer your questions – they’ll fix problems for you remotely. Take the hassle out of troubleshooting with XFINITY Signature Support.