Hello List

We have some issues with emails sent from the kpt.ch online plattform over Swisscom Mobile IP Range:

inetnum: 138.188.0.0 - 138.188.255.255 netname: Swisscom-Mobile country: CH

There is no SPF entry and the sending ip addresses are not listed by dnswl.org nor the Swinog Whitelist, causing greylisting to delay emails (containing login tokens valid for a couple of minutes only) from those potentially infected end customer ip ranges :-)

Has Swisscom started to assign IP Addresses from this range to it's email sending platform? The hostname and swisscom's own SPF entry let's me suspect this is the case:

mailout153.swisscom.com[138.188.176.153]

spf.swisscom.com descriptive text "v=spf1 ip4:193.222.81.224/27 ip4:193.222.81.96/27 ip4:194.11.148.48/28 ip4:194.11.148.64/28 ip4:194.6.164.0/24 ip4:138.190.12.80/28 ip4:138.190.12.32/27 ip4:138.188.176.0/26 ip4:138.188.176.128/26 ip4:138.188.166.96/27 ~all"

Well I guess I add those ranges to the SWINOG Whitelist.

Mit freundlichen Grüssen

-Benoît Panizzon-