Our company switched ISPs to Integra last week and since then every time we email anyone using bigfish.com, I believe this is Microsoft's spam filter, we get the following rejection. I have emailed the delist address in the body of the email and they continue to insist we are not on their blocked list. Any help would be appreciated.
Delivery has failed to these recipients or distribution lists:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
The following organization rejected your message: TX2EHSMHS037.bigfish.com.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: MAIL.Tice.ticeelectric.com
TX2EHSMHS037.bigfish.com #550 5.7.1 Service unavailable; Client host [184.108.40.206] blocked using Blocklist 1, mail from IP banned; To request removal from this list please forward this message to email@example.com
Original message headers:
Received: from MAIL.Tice.ticeelectric.com
([fe80::5414:cb83:6bf1:7d9 4]) by
([fe80::5414:cb83:6bf1:7d9 4%10]) with mapi; Mon,
12 Mar 2012 06:42:33 -0700
From: Pat Maloney <firstname.lastname@example.org>
To: "email@example.com" <firstname.lastname@example.org>
Date: Mon, 12 Mar 2012 06:40:13 -0700
Subject: Fwd: Test Email
Thread-Topic: Test Email
25BDA5D8B5 E@ticeelec .com>
442DF5009A 5@ticeelec .com>
Content-Type: text/plain; charset="utf-8"
The NDR has the resolution in it.
"TX2EHSMHS037.bigfish.com #550 5.7.1 Service unavailable; Client host [220.127.116.11] blocked using Blocklist 1, mail from IP banned; To request removal from this list please forward this message to email@example.com
Send the email to firstname.lastname@example.org. This is being blocked because your IP is on a blocklist.
FYI, it is recommended to not include personal information, such as email addresses/names/IP addresses in this content as a safety measure for yourself and your intended recipients.
- Proposed as answer by Daniel Trautman Monday, March 26, 2012 11:06 PM