From a static IP with a properly aligned A <<>> PTR..
telnet mx01..t-online.de 25
Trying 194.25.134.72...
Connected to mx01.t-online.de.
Escape character is '^]'.
554 IP=104.128.144.8 - A problem occurred. (Ask your postmaster for help
or to contact t...@rx.t-online.de to clarify.) (BL)
Connection closed by foreign host.
On 2020-06-09 7:55 a.m., Al Iverson via mailop wrote:
I'm getting that same error here.
telnet mx01.t-online.de 25
Trying 194.25.134.72...
Connected to mx01.t-online.de.
Escape character is '^]'.
554 IP=206.125.175.2 - A problem occurred. (Ask your postmaster for
help or to contact t...@rx.t-online.de to clarify.) (BL)
Connection closed by foreign host.
I'm calling it broken, not intentional. I put a notice up on my Spam
Resource blog and Twitter.
To all doing a telnet test (from a non-dynamic IP), is anyone NOT
getting that 554 error?
Cheers,
Al Iverson
On Tue, Jun 9, 2020 at 9:49 AM Michael Peddemors via mailop
<mailop@mailop.org> wrote:
We also had a problem with them (One of our ISP email clusters) , a case
where we had two (2) PTR records, and two A Records, but either their
lookup, or their 3rd party tools weren't smart enough to check each
entry to find a A <<>> PTR match...
When contacted, they responded by saying that 'any' flag on the
MULTIVALLI listing tool would prevent delisting..
Yeah, it looks like they went overly aggressive, not sure if they use
home grown tools, or a 3rd party though..
So you MIGHT want to check A <<>> PTR alignment, might be what they are
using..
On 2020-06-09 5:30 a.m., Jon Morby (Fido) via mailop wrote:
Well they've responded, but weren't very helpful ... I don't think they
see a problem :(
It certainly looks like a misconfiguration to me tbh
Michael Rathbun via mailop wrote on 09/06/2020 03:59:
On Tue, 09 Jun 2020 04:35:40 +0200, Ralph Seichter via mailop
<mailop@mailop.org> wrote:
554 IP=47.190.44.19 - A problem occurred. (Ask your postmaster for
help or to contact t...@rx.t-online.de to clarify.) (BL) Connection
closed by foreign host.
I remember seeing this particular error code when setting up new mail
servers with IPs that have not previously sent mail to T-Online MXs. In
these cases I e-mailed the listed address and T-Online staff manually
cleared the addresses. Thus, my guess is that some T-Online blocking
mechanism is currently out of whack.
The address quoted, and the string "(BL)" does suggest that a blocking
mechanism has wandered off into the weeds.
mdr
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------------------------------------------------------------------------
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Visit us at http://www.linuxmagic.com @linuxmagic
A Wizard IT Company - For More Info http://www.wizard.ca
"LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd.
------------------------------------------------------------------------
604-682-0300 Beautiful British Columbia, Canada
This email and any electronic data contained are confidential and intended
solely for the use of the individual or entity to which they are addressed.
Please note that any views or opinions presented in this email are solely
those of the author and are not intended to represent those of the company.
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