[NLNOG] unable to use ns1/2-dedi0010.zxcs.nl, ns1/2.superserver07.zxcs.nl

[Thomas Mieslinger]

Hi,

anyone around here from zxcs.nl or vimexx.nl?

My customers complain that they can not sent emails to npsdriven.com or
watersnip.nl.

My recursor source addresses are
     2607:f1c0:5c0:53::/64
     2607:f1c0:5c1:53::/64
     2001:8d8:5c0:453::/64
     2001:8d8:5c1:453::/64
     2001:ba0:5c0::/64
     2a00:da00:5c0::/64
     2a00:da00:5c0:3::/64
     2a00:da00:5c0:4::/64
     74.208.114.128/26
     74.208.114.192/26
     77.68.65.64/26
     82.165.226.0/26
     82.165.226.64/26
     88.208.254.128/26
     82.223.158.0/26
     213.171.202.197/27

please remove firewall drop rules or low hashlimits (<50 qps) for the
listed prefixes on your gear to allow your customers to communicate with
my customers.

I run the DNS for IONOS (incl. arsys, fasthosts, home.pl) 1&1, gmx.net,
mail.com, web.de. (>100M email accounts)

In case of any problems please contact abuse at ionos.com first. The emails
sent there are read and reacted to.

Cheers Thomas