This error is actually coming from Comcast's email servers when I try to send
an
email to our company from Comast.
________________________________
From: Richard Stovall <rich...@gmail.com>
To: MS-Exchange Admin Issues <exchangelist@lyris.sunbelt-software.com>
Sent: Tue, April 26, 2011 10:23:12 PM
Subject: Re: Fixing Exchange 2007 server that might be hijacked or used as a
relay and has been blacklisted
I've never used Zimbra. (It looks like you do.)
How is your edge-facing Zimbra instance determining what internal addresses are
viable?
On Tue, Apr 26, 2011 at 11:18 PM, Don Kuhlman <drkuhl...@yahoo.com> wrote:
Yep Richard - you're undestanding perfectly - outside parties - say
usern...@comcast.net can't send to the company
>Comcast's email immediately generates a huge error that I can't even copy and
>paste. I did type the major parts of it and they are pasted below with email
>and company.com being substituted out, etc.
>
>This worked about a week ago(no problems sending from comcast to our domain).
>At first I thought something had changed at Comcast. I googled the SCC-1203
>and
>SCC-1204 codes along with the error text below and it led me to Comcast's
>forum. That in turn led me to posts saying the target email address was
>not on
>a secure server or that the target domain was not allowed to be sent to, which
>then led me to search for blacklisting and I found the domain blacklisted on
>two
>sites, which I went to and manually asked them to remove us by putting our
>external email server ip address into the forms on the blacklist sites.
>
>However, just trying it now from Comcast still causes it to fail immediately
>with this error. Since I orginally thought it was a Comcast issue because I
>hadn't heard about any other failures from other domains sending to us
>(hitachi,
>etc.), I opened a case with Comcast. They are supposed to be investigating
>which maybe they can enlighten me too ;)
>
>Thanks!
>
>Don K
>Message not sent; The following addresses were not accepted: {0} SCC-1203
>Message not sent; The following addresses were not accepted:
>email@company.comSCC-1204
>method: SendMsgRequest
>msg: Invalid address:
>em...@company.comcom.zimbra.cs.mailbox.MailSender$SafeSendFailedException:
>code: mail.SEND_ABORTED_ADDRESS_FAILURE
>detail: soap:Sender
>trace: btp00l0-121808:1303873522184:a35c69230074fa82
>
>request: Body: {
>
>
>
>
>
>
________________________________
From: Richard Stovall <rich...@gmail.com>
>To: MS-Exchange Admin Issues <exchangelist@lyris.sunbelt-software.com>
>Sent: Tue, April 26, 2011 9:07:34 PM
>Subject: Re: Fixing Exchange 2007 server that might be hijacked or used as a
>relay and has been blacklisted
>
>
>Blacklisting, as I typically understand it, means that you can't send to the
>other party. What you're describing, unless I misunderstand, is a situation
>where outside parties are unable to send to you.
>
>
>
>What are the exact (full text) errors you received from Comcast when testing?
>
>
>On Tue, Apr 26, 2011 at 9:30 PM, Don Kuhlman <drkuhl...@yahoo.com> wrote:
>
>Hi folks. This is probably a very basic question for the Exchange gurus...I'm
>trying to support of an exchange 2007 server (on SBS 2008) and found that it
>looks like we're being blacklisted by certain sites. Internal users were
>reporting that they couldn't receive emails from outside customers using
>comcast.net, and hitachi among others. I tried to send to emails internally
>from comcast and was also getting errors that we were being blocked or not
>allowed from comcast.
>>
>>I ran some scans from different sites such as
>>http://www.mxtoolbox.com/SuperTool.aspx that show if you're blacklisted and
>>found a couple instances where we were.
>>
>>I've been trying to find a way (internally from the server logs or firewall
>>logs) to see if the Exchange 2007 server was hijacked or is being used as a
>>relay. I'm not sure what to look for as traffic patterns on the firewall so
>>that I can set rules to block this, nor what I might want to try initially on
>>the server to protect it.
>>
>>I looked (googled) for how to test for blacklisting and all I'm finding is
>>sites
>>that tell you how to request you be removed temporarily from a blacklist or
>>how
>>to test your ip for blacklist status.
>>
>>Are there good sites that I can study to find out from the server's
>>perspective
>>or how to make sure it's not being used maliciously for relaying or spamming
>>or
>>some sites that tell me how to lock it down or verify it's okay (not to
>>mention
>>getting it permanently off the blacklists) ?
>>
>>Thanks!
>>
>>Don K
>>
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