That'd be IBM / Softlayer. My usual long time contact there for security stuff quit along with their former CEO, and both of them went off and started a new company (Stackpath) with the 4 billion IBM paid him for acquisition, once he got passed over for the top cloud role at IBM in favour of a lifer IBM exec.
Stackpath is currently eating the lunch of quite a few outfits in the network security space, and most everyone is eating IBM's lunch in the cloud space in any case. And a lot of the top talent at Softlayer seems to have moved along with those two to Stackpath. So got to see who is left out there with a reasonable amount of abuse / policy enforcement clue. If this isn't resolved I'll move my hosting elsewhere. --srs On 09/02/18, 12:34 PM, "silklist on behalf of Bharath Chari" <silklist-bounces+suresh=hserus....@lists.hserus.net on behalf of ch...@arachnis.com> wrote: On 02/09/2018 04:11 AM, Udhay Shankar N wrote: > On Fri, Feb 9, 2018 at 7:22 AM, Tomasz Rola <rto...@ceti.pl> wrote: > > Lo and behold, my connection has been cut off for few hours... > It looks like your ISP is on Microsoft's blocklist. You should check with > them. See below, your message is bouncing to all silklist addresses within > the Microsoft universe: > > 550 5.7.1 Unfortunately, messages from [50.23.85.242] weren't sent. > Please contact your Internet service provider since part of their network > is on our block list (AS3140). You can also refer your provider to > http://mail.live.com/mail/troubleshooting.aspx#errors. [ > DM3NAM03FT057.eop-NAM03.prod.protection.outlook.com] > > Looks like the IP block of lists.hserus.net is on Microsoft's blocklist. Not Tomasz's.