IP Addresses of the 1&1 IONOS Mail Servers

Here you will find a list of the IP addresses via which the 1&1 IONOS mail system sends emails.

IP addresses of the servers used by 1&1 IONOS customers to send emails

Shared Server Outbound IPs

IP Address Name
217.72.192.73 mout.kundenserver.de
217.72.192.74 mout.kundenserver.de
217.72.192.75 mout.kundenserver.de
212.227.17.13 mout.kundenserver.de
212.227.17.24 mout.kundenserver.de
212.227.126.130 mout.kundenserver.de
212.227.126.131 mout.kundenserver.de
212.227.126.133 mout.kundenserver.de
212.227.126.134 mout.kundenserver.de
212.227.126.135 mout.kundenserver.de
212.227.126.187 mout.kundenserver.de
74.208.4.194 mout.perfora.net
74.208.4.195 mout.perfora.net
74.208.4.196 mout.perfora.net
74.208.4.197 mout.perfora.net

Forwarding with a Spam Evaluation Entered in the Header:

IP Address Name
82.165.159.5 mout-xforward.kundenserver.de
82.165.159.6 mout-xforward.kundenserver.de
82.165.159.7 mout-xforward.kundenserver.de
82.165.159.8 mout-xforward.kundenserver.de
82.165.159.9 mout-xforward.kundenserver.de
82.165.159.10 mout-xforward.kundenserver.de
82.165.159.36 mout-xforward.kundenserver.de
82.165.159.37 mout-xforward.kundenserver.de
82.165.159.38 mout-xforward.kundenserver.de
82.165.159.39 mout-xforward.kundenserver.de
82.165.159.43 mout-xforward.kundenserver.de
82.165.159.44 mout-xforward.kundenserver.de
82,165,159,132 mout-xforward.perfora.net
82,165,159,133 mout-xforward.perfora.net
82,165,159,134 mout-xforward.perfora.net

Forwarding and Mailer Daemons:

IP Address Name
217.72.192.100 mout-bounce.kundenserver.de
217.72.192.101 mout-bounce.kundenserver.de
217.72.192.102 mout-bounce.kundenserver.de
212.227.15.22 mout-bounce.kundenserver.de
212.227.15.31 mout-bounce.kundenserver.de
212.227.15.32 mout-bounce.kundenserver.de
212.227.15.56 mout-bounce.kundenserver.de
212.227.15.57 mout-bounce.kundenserver.de
212.227.15.58 mout-bounce.kundenserver.de
212.227.17.3 mout-bounce.kundenserver.de
212.227.17.14 mout-bounce.kundenserver.de
212.227.17.25 mout-bounce.kundenserver.de
74.208.4.198 mout-bounce.perfora.net
74.208.4.204 mout-bounce.perfora.net
74.208.4.205 mout-bounce.perfora.net

IP addresses of the servers through which 1&1 IONOS newsletters, invoices and employee emails are sent

IP addresses of servers used to send 1&1 IONOS newsletters, invoices, and employee e-mails:

IP Address Name
212.227.15.53 mout-csbulk.1and1.com
212.227.15.47 mout-csbulk.1and1.com
212.227.126.224 mout-csbulk.1and1.com
212.227.126.225 mout-csbulk.1and1.com
212.227.126.226 mout-csbulk.1and1.com
212.227.126.227 mout-csbulk.1and1.com
212.227.126.220 mbulk.1and1.com
212.227.126.221 mbulk.1and1.com
212.227.126.222 mbulk.1and1.com
212.227.126.223 mbulk.1and1.com

Servers That Send Invoices and Support E-mails:

IP Address Name
212.227.15.50 mout-cscorp.1and1.com
212.227.15.52 mout-cscorp.1and1.com

Internal Company Servers:

IP Address Name
212.227.15.7 moint.1and1.com
212.227.15.8 moint.1and1.com
212.227.17.7 moint.1and1.com
212.227.17.27 moint.1and1.com