
Hi,
I run a few Mailman lists, and yesterday evening I started having trouble sending Email to Roadrunner customers. I figured it was a temporary failure of some kind, until this morning when I received the same bounces. Whenever Sendmail connects to a Roadrunner Email server, it immediately gets this error:
----- Transcript of session follows ----- ... while talking to dnvrco-cmedge01.email.rr.com.: <<< 554 dnvrco-cmimta17 esmtp ESMTP server not available AUP#I-1000 ... while talking to dnvrco-cmedge02.email.rr.com.: <<< 554 dnvrco-cmimta14 esmtp ESMTP server not available AUP#I-1000 554 5.0.0 Service unavailable
Various attempts at Googling this error have lead me to believe that my IP may have been blacklisted by RR/TWC for some reason. Since the blocking happens immediately upon connect, my server doesn't have enough time to send enough information for RR/TWC to do an SPF check much less a DKIM validation. Various links I've tried to reach RR/TWC's postmaster site now lead to a Spectrum support page targeted at Spectrum customers having problems sending Email or receiving spam or other unwanted Email, not mail servers having problems sending into Spectrum/Roadrunner/TWC. Does anyone here know of an up-to-date link where I can find out if my IP is blacklisted by them, submit a removal request, etc?
Various RBL checking tools indicate I'm not on any blacklists, and several reputation check tools show my IP as being clean. I don't know—and probably never will—why Time Warner/Roadrunner would put me on their blacklist. This happened all of a sudden, a message addressed to two Roadrunner customers yesterday afternoon was accepted, then about five hours later they started blocking my IP.
Thanks for any help,
Jayson

Hi Jayson,
Roadrunner has been problematic in this way for decades. They don't explain, they don't provide policy information or contact addresses, and their staff have frequently been snotty about DoS'ing their own customers.
You may have already seen this thread on the Spectrum forums. I think that help requests from RR users will be most likely to get them to take action. This suggests that there are channels available to customers (apparently not very well publicized to RR users either!)
https://forums.timewarnercable.com/t5/Email/Listserve-messages-sent-to-my-Ro...
----- Transcript of session follows ----- ... while talking to dnvrco-cmedge01.email.rr.com.: <<< 554 dnvrco-cmimta17 esmtp ESMTP server not available AUP#I-1000
Various attempts at Googling this error have lead me to believe that my IP may have been blacklisted by RR/TWC for some reason.
Seems logical. 554 is an administrative denial, not a server issue, and AUP is likely to abbreviate "Acceptable Use Policy". As you say, if you don't get to HELO it's an IP-based or reverse-DNS-based policy of some kind.
Does anyone here know of an up-to-date link where I can find out if my IP is blacklisted by them, submit a removal request, etc?
The only thing I can suggest is mail to postmaster. (I seem to recall that that address may have been non-functional at times, and it's mentioned in the thread....)
Steve

I'll agree and they don't always pay attention to their users. I have road runner internet but separate email.
On 7/7/2019 1:59 AM, Stephen J. Turnbull wrote:
Hi Jayson,
Roadrunner has been problematic in this way for decades. They don't explain, they don't provide policy information or contact addresses, and their staff have frequently been snotty about DoS'ing their own customers.
You may have already seen this thread on the Spectrum forums. I think that help requests from RR users will be most likely to get them to take action. This suggests that there are channels available to customers (apparently not very well publicized to RR users either!)
https://forums.timewarnercable.com/t5/Email/Listserve-messages-sent-to-my-Ro...
----- Transcript of session follows ----- ... while talking to dnvrco-cmedge01.email.rr.com.: <<< 554 dnvrco-cmimta17 esmtp ESMTP server not available AUP#I-1000
Various attempts at Googling this error have lead me to believe that my IP may have been blacklisted by RR/TWC for some reason.
Seems logical. 554 is an administrative denial, not a server issue, and AUP is likely to abbreviate "Acceptable Use Policy". As you say, if you don't get to HELO it's an IP-based or reverse-DNS-based policy of some kind.
Does anyone here know of an up-to-date link where I can find out if my IP is blacklisted by them, submit a removal request, etc?
The only thing I can suggest is mail to postmaster. (I seem to recall that that address may have been non-functional at times, and it's mentioned in the thread....)
Steve
Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/guest2%40sgeinc.com
participants (3)
-
Jayson Smith
-
Richard Shetron
-
Stephen J. Turnbull