And once again..
NetRange: 52.145.0.0 - 52.191.255.255
CIDR: 52.152.0.0/13, 52.146.0.0/15, 52.145.0.0/16,
52.148.0.0/14, 52.160.0.0/11
NetName: MSFT
NetHandle: NET-52-145-0-0-1
Parent: NET52 (NET-52-0-0-0-0)
NetType: Direct Allocation
OriginAS:
Organization: Microsoft Corporation (MSFT)
RegDate: 2015-11-24
Updated: 2021-12-14
Ref: https://rdap.arin.net/registry/ip/52.145.0.0
OrgName: Microsoft Corporation
Every organization choosing to use this IP space SHOULD insist that MS
give them SWIP or 'rwhois'.
Otherwise you may look like the many spammers using their IP Space.
As well.. *sigh* (Time to put that 'Operating an Email Server 101'
course back on line)
http://twsegcloud.com/
If you saw connections from an IP with no SWIP and no website, would YOU
allow traffic from it?
On 2022-03-28 15:30, Graeme Slogrove via mailop wrote:
We are actively using the new IP ranges as published a few weeks ago,
everything seemed fine until this morning
Server refused mail at MAIL FROM - 553 5.3.0 flpd577 DNSBL:RBL 521<
52.165.84.32 >_is_blocked.For assistance forward this error to
[email protected] <mailto:[email protected]>
The ranges again are
52.165.84.32/28
52.165.84.16/28
20.81.235.112/28
20.81.235.96/28
Anyone from AT&T that I can contact to escalate this block, as it’s
affecting customers.
Regards,
*Graeme Slogrove ***
Sr. Director, Product Engineering
m: +64 21.277.0844
www.trustwave.com <http://www.trustwave.com/>
/Recognized by industry analysts as a //_leader in managed security
services <https://www.trustwave.com/Company/About-Us/Accolades/>._/
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