John: Did that test and it is not the issue. They are definitely blocking the IP address.
Does anyone know if comcast is blocking generic reverse dns entries? Chuck Schick Warp 8, Inc. (303)-421-5140 www.warp8.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Doyle Sent: Thursday, July 13, 2006 2:19 PM To: [email protected] Subject: Re: [IMail Forum] Comcast issues Chuck Not sure if this is the same issue, but last week I began having problems with verizon then sbc then att. I don't know if Comcast is with that bunch, but. They started blocking on my email address domain. By that I mean in Outlook, for example, the user entered email address. I know this sounds stupid, but have the user change his email address to a different domain, that can get through and try sending again. If that goes through, you have to get a Comcast user to "allow" mail from your domain. Verizon never blocked our IP just the domain name in the return address. We had some with no problme, others blocked, with everyone on the same IP address. Good luck, took me a week to figure out. John ---------- Original Message ---------------------------------- From: "Chuck Schick" <[EMAIL PROTECTED]> Reply-To: [email protected] Date: Thu, 13 Jul 2006 13:57:42 -0600 >I have one domain that this morning started to get blocked by comcast. > >07:13 10:50 SMTP-(00000399) 550-IP.ADD.res.ss blocked by >ldap:ou=rblmx,dc=comcast,dc=net 07:13 10:50 SMTP-(00000399) 550 Comcast >does not support the direct connection to its mail servers from >residential IPs. Your mail should be sent to comcast.net users through >your ISP. Please contact your ISP or mail administrator for more >information. > >One of our techs thought the problem might of been a generic reverse >dns entry, but comcast is accepting other Ips in that block that have >generic reverse DNS entries. Anyone have any thoughts on what may be >going on or why comcast would single out one IP as residential. > >Does anyone know how to contact Comcast so I could find out what is >going on??? > >Chuck Schick >Warp 8, Inc. >(303)-421-5140 >www.warp8.com > >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html >List Archive: >http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > ______________ ______________ ______________ ______________ Sent via the KillerWebMail system at mail.web-partners.com To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
