Email server

Customer server IP addresses that 1&1 customers use to send e-mails.

Shared Server Outbound IPs

IP-Adresse Name
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
212.227.17.8 moutng.kundenserver.de
212.227.17.9 moutng.kundenserver.de
212.227.17.10 moutng.kundenserver.de
212.227.126.171 moutng.kundenserver.de
212.227.126.173 moutng.kundenserver.de
212.227.126.176 moutng.kundenserver.de
212.227.126.177 moutng.kundenserver.de
212.227.126.186 moutng.kundenserver.de
212.227.126.187 moutng.kundenserver.de
212.227.126.188 moutng.kundenserver.de
212.227.126.190 moutng.kundenserver.de
212.227.126.191 moutng.kundenserver.de

Forwarding with spam evaluation entered in header

IP-Adresse Name
74.208.4.202 mout-xforward.perfora.net
74.208.4.203 mout-xforward.perfora.net
212.227.15.33 mout-xforward.kundenserver.de
212.227.15.34 mout-xforward.kundenserver.de
212.227.15.35 mout-xforward.kundenserver.de
212.227.15.36 mout-xforward.kundenserver.de
212.227.15.37 mout-xforward.kundenserver.de
212.227.17.4 mout-xforward.kundenserver.de
212.227.17.5 mout-xforward.kundenserver.de
212.227.17.6 mout-xforward.kundenserver.de

Forwarding and mailer daemons

IP-Adresse Name
74.208.4.198 mout-bounce.perfora.net
74.208.4.199 mout-bounce.perfora.net
212.227.15.20 mout-bounce.kundenserver.de
212.227.15.21 mout-bounce.kundenserver.de
212.227.15.22 mout-bounce.kundenserver.de
212.227.15.23 mout-bounce.kundenserver.de
212.227.15.24 mout-bounce.kundenserver.de
212.227.17.1 mout-bounce.kundenserver.de
212.227.17.2 mout-bounce.kundenserver.de
212.227.17.3 mout-bounce.kundenserver.de

Server for sending newsletters from 1&1 customers

IP-Adresse Name
212.227.126.170 pmt.perfora.net
212.227.126.172 pmt2.perfora.net

1&1 sends newsletters, invoices and employee e-mails over the following servers.

Servers that send invoices and support e-mails

IP-Adresse Name
212.227.126.224 csbulk.1and1.com
212.227.126.225 csbulk.1and1.com
212.227.126.226 csbulk.1and1.com
212.227.126.227 csbulk.1and1.com

Server for sending 1&1 newsletters

IP-Adresse Name
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

Internal company servers

IP-Adresse Name
212.227.126.201 mxintern.schlund.de
212.227.126.203 mxintern.schlund.de
212.227.126.204 mxintern.schlund.de