https://wznoc.com/
With a obscure page like that, you are asking for trouble..
Just like the pages many of the bullet proof hosters throw up..
Why not use amscomputer.com in the PTR records, if these are your servers?
https://www.amscomputer.com/
Inquiring minds would like to know.
CIDR: 173.209.54.176/29
NetName: GLOBOTECH-173-209-54-176
NetHandle: NET-173-209-54-176-1
Parent: GTCOMM (NET-173-209-32-0-1)
NetType: Reassigned
OriginAS:
Customer: AMS Computer Service, Inc (C10862387)
RegDate: 2024-06-03
Updated: 2024-06-03
I see that you just recently started using these IPs correct?
There is a history of some bad customers using your providers's IP
space, so it could be historical triggers that make AT&T more suspicious.
Don't know what email domain you are mailing from, but double check your
SPF records, especially when using new IPs.
On 2024-06-18 13:25, Scott Mutter via mailop wrote:
What's going on with AT&T?
They're blocking our mail servers left and right (IPs aren't on any
other blacklist mind you) and not hearing a peep from
abuse_...@abuse-att.net <mailto:abuse_...@abuse-att.net>.
What's the point of having your blocked message state to send an email
to abuse_...@abuse-att.net <mailto:abuse_...@abuse-att.net> if nobody is
going to monitor abuse_...@abuse-att.net <mailto:abuse_...@abuse-att.net>?
IPs in question are:
173.209.54.179
67.222.148.107
173.225.104.91
All have the same error message
553 5.3.0 flph832 DNSBL:RBL 521< 173.209.54.179 >_is_blocked.For
assistance forward this error to abuse_...@abuse-att.net
<mailto:abuse_...@abuse-att.net>
553 5.3.0 flpd591 DNSBL:RBL 521< 67.222.148.107 >_is_blocked.For
assistance forward this error to abuse_...@abuse-att.net
<mailto:abuse_...@abuse-att.net>
553 5.3.0 alph767 DNSBL:RBL 521< 173.225.104.91 >_is_blocked.For
assistance forward this error to abuse_...@abuse-att.net
<mailto:abuse_...@abuse-att.net>
Emails were sent (to abuse_...@abuse-att.net
<mailto:abuse_...@abuse-att.net>) on June 14th and June 17th - I've not
heard so much as a confirmation that they got those messages.
This isn't the first time I've had issues with AT&T's blacklist. It's
just frustrating, if you're going to block IPs for no apparent reason,
at least have someone check the email address you give for assistance or
find some other way to provide assistance.
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