IP blacklisted by at&t
Hi, This may not be strictly on-topic for this list, but I'm getting extremely frustrated and am hoping someone can give me some ideas. We moved our mailman server to a VPS with a new IP address. After the move, our IP has been blacklisted by AT&T. We had some DNS trouble initially, and this may be why. I've submitted the form that at&t tells you to in order to get your IP removed from the blacklist. I then get a response back saying that the IP is not blacklisted. However, I've got recent bounce messages saying we are. If I try and telnet to at&t's mail servers from the mailman server, I get rejected because of a blacklisted Ip. The IP they are saying is blacklisted is the same one I submitted on there web form. Does anyone have any strategies in dealing with at&t? I would love... god forbid... to actually talk to someone in their postmaster team about this. We host around 200 mailing lists for the National Federation of the Blind. Some of the lists are fairly high traffic. We are not sending out spam. Any help or suggestions would be apreciated.
On Mon, Jun 17, 2013 at 09:07:29AM -0400, Jason Fayre wrote:
I've submitted the form that at&t tells you to in order to get your IP removed from the blacklist. I then get a response back saying that the IP is not blacklisted.
Usually, there's a contact address to use here.
However, I've got recent bounce messages saying we are. If I try and telnet to at&t's mail servers from the mailman server, I get rejected because of a blacklisted Ip. The IP they are saying is blacklisted is the same one I submitted on there web form. Does anyone have any strategies in dealing with at&t? I would love... god forbid... to actually talk to someone in their postmaster team about this.
Is that just on IPv4? In some cases, using IPv6 may work…
The short answer may be "their MXes, their rules"; finding someone with a cluebat will often be the hardest part.
That does assume they've not outsourced the blacklisting side of things, of course, when there's a further problem. It's probably worth having a look at the reputation of the address block you're using; https://grepular.com/projects/dnsblsearch.txt may be of interest/use.
We host around 200 mailing lists for the National Federation of the Blind. Some of the lists are fairly high traffic.
In a previous role, skipping email and using the telephone worked for getting through to the right person/department.
Social media may work in your favo(u)r here… ask how you might get in contact with postmaster@ via twitter/other channels. And perhaps use your community's help, too.
(NANOG or MailOp may be better channels)
-- "There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies and the other is to make it so complicated that there are no obvious deficiencies." -- Hoare
participants (2)
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Adam McGreggor -
Jason Fayre