[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-23 Diskussionsfäden Daniel Stirnimann via swinog
Yes, I understand the technical issues. And yes it's ugly. But do you have a better solution? Swisscom should stop tampering with DNS, as it does not work, and is no solution to the problem. I disagree, Swisscom still misses a lot of phishing and malware websites. I would like them to be

[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-23 Diskussionsfäden Daniel Stirnimann via swinog
Try http://195.186.208.193/ Daniel On 23.04.2024 08:40, Marc Balmer wrote: Swisscom returns this IP address for blocked domain names most likely because it assumes this website is compromised (phishing, malware). If you visit this IP address in a web browser you are redirected to

[swinog] Re: Swisscom DNS issue: spectrum-conference.org wrongfully resolves to a bluewin address in swisscom mobile networks

2024-04-22 Diskussionsfäden Daniel Stirnimann via swinog
Swisscom returns this IP address for blocked domain names most likely because it assumes this website is compromised (phishing, malware). If you visit this IP address in a web browser you are redirected to https://www.swisscom.ch/abuse-info This website has a form to report false positive.

[swinog] Re: Debugging bluewin.ch emails not going through

2023-12-08 Diskussionsfäden Daniel Stirnimann via swinog
at least one delegation is broken: ns1.init7.net: 200-30.135.144.213.in-addr.arpa. 86400 IN NSdns.nazgul.ch. 200-30.135.144.213.in-addr.arpa. 86400 IN NSdns.swill.org. dig dns.swill.org ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 16024 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0,

[swinog] Operational announcement: transition from NSEC3 to NSEC in the CH/LI zone

2023-10-30 Diskussionsfäden Daniel Stirnimann via swinog
or notice any anomalies related to this transition, please don't hesitate to contact us. [1] https://www.nic.ch/statistics/dnssec/ [2] https://zonedata.switch.ch/ [3] https://datatracker.ietf.org/doc/html/rfc8198 -- Daniel Stirnimann, SWITCH-CERT Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland

[swinog] Re: Swiss Domain Security Report Q3 2022

2023-06-07 Diskussionsfäden Daniel Stirnimann via swinog
Hi Adrian, On 07.06.23 21:33, Adrian Ulrich via swinog wrote: I'm pretty surprised that of the 1.7M domains with an MX record, only 57% have DKIM I don't see how one could reliability gather this data from DNS: DKIM allows you to specify a selector in the header of the mail: This mail for

[swinog] Re: DNSSEC auto-disabled by SWITCH on some .ch domains?

2023-05-01 Diskussionsfäden Daniel Stirnimann via swinog
On 01.05.23 15:48, Benoît Panizzon via swinog wrote: It looks like Gandi at least messed up their Registrar UI. From their point of view, my 'algo 5' .ch domains have still DNSSEC active but deleting DS or disabling DNSSEC hangs forever and upon reloading my old algo 5 keys are back. I guess

[swinog] Re: DNSSEC auto-disabled by SWITCH on some .ch domains?

2023-05-01 Diskussionsfäden Daniel Stirnimann via swinog
I wasn't a part of this procedure so I cannot answer anything related to that. I can, however, respond to questions for which we make information available online. If you want specific information about the procedure I suggest you ask your registrar or you can contact SWITCH at

[swinog] Re: DNSSEC issue with swizzonic DNS servers?

2023-01-06 Diskussionsfäden Daniel Stirnimann via swinog
Hi Benoit Not sure what the original problem was on the 27th of Dec but the current problem is as follow: numberportability.ch has an NSEC negative proof at the zone apex which states that there are no other hostnames then numberportability.ch itself. dig @dns1.swizzonic.ch

[swinog] New nameserver node for LI/CH at SwissIX

2021-10-22 Diskussionsfäden Daniel Stirnimann
Hello Swinog, The TLD zones .ch/.li make use of the RcodeZero Anycast DNS service of nic.at since a few weeks (The nameserver letters d.nic.ch/d.nic.li to be precise). Nic.at has now added an anycast node at SwissIX. In order to get the best possible RTT and increased resiliency against potential

Re: [swinog] our zimbra webmail server is on the swisscom dns blacklist ...

2020-07-24 Diskussionsfäden Daniel Stirnimann
The domain name zimbox.ch seems to be listed on some phishing blocklists [1]. I found entries at G-Data (VT) and at SURBL: http://www.surbl.org/surbl-analysis -> zimbox.ch is listed in PH A ticket for list removal of this domain is already in our queue

Re: [swinog] Missing DNS A records for several domains hosted by swisscom.com

2020-02-07 Diskussionsfäden Daniel Stirnimann
It looks like that the affected domain names have not been updated to the (new) MX hosts: mx01.mailsecurity.swisscom.com. mx02.mailsecurity.swisscom.com. So, I guess its a domain owner problem and not a Swisscom problem. For example, spital-lachen.ch used to have

Re: [swinog] swinog Digest, Vol 174, Issue 3

2019-07-11 Diskussionsfäden Daniel Stirnimann
The pointers have been given before. This is your problem: https://www.spamhaus.org/query/ip/79.134.251.203 Daniel On 11.07.19 14:25, Andreas Fink wrote: > Except that this is not applicable. In my case my mailserver is not > hosted at Swisscom but on my own infrastructure, is on the same IP

[swinog] .CH/.LI DNSSEC Algorithm Rollover

2018-11-11 Diskussionsfäden Daniel Stirnimann
understands RSA but not ECDSA, then it will answer to ch. or li. queries as if they were not DNSSEC signed. You can test which DNSSEC algorithms are supported by the DNS resolver(s) configured on your system by visiting: https://rootcanary.org/test.html Best regards, Daniel Stirnimann, SWITCH -- SWITCH

Re: [swinog] Google DNS on Salt Mobile

2018-10-29 Diskussionsfäden Daniel Stirnimann
Hello Greg, > It seems like Salt is no longer supplying their own DNS servers when > establishing an LTE connection. Instead, the network responds with Google DNS > servers (8.8.8.8 8.8.4.4). They seem to use a mix of Google Public DNS and own resolvers. I noticed this a year ago as well:

[swinog] Sporadic DNS resolver error for *.mail.protection.outlook.com

2018-05-22 Diskussionsfäden Daniel Stirnimann
looks like the authoritative nameservers cannot handle EDNS(0) queries (standardized in 1999, rfc2671). While this is not a problem per see, the FORMERR response is not according RFC. For more details see: https://ednscomp.isc.org/ednscomp/17c95198e4#edns Name resolution therefore relies on

Re: [swinog] datacomm/vtxnet and quicknet/kfsb are missing TLS on their mailservers

2018-02-02 Diskussionsfäden Daniel Stirnimann
> Since you seem to like quotes, Jon Postel had one for you: > > "Be liberal in what you accept, and conservative in what you send" I thought this mindset is outdated: https://tools.ietf.org/html/draft-thomson-postel-was-wrong-02 Daniel ___ swinog

Re: [swinog] 'known' DNS Problems with Migros Banking App?

2016-08-09 Diskussionsfäden Daniel Stirnimann
Hello Benoit, I have just tested the Migros Banking App on Android on a WiFi network with an IPv4 only address. The dns resolver is validating and has an IPv4 and IPv6 address to resolve names. If I start the App on my smartphone it resolves the following domain names: secure.migrosbank.ch. A

Re: [swinog] 20 Minuten Online gehackt?

2016-04-07 Diskussionsfäden Daniel Stirnimann
Das Problem ist weniger 20min als der AD-Server von Tamedia. Aktuell kommt der Schadcode halt nur via 20min.ch. Aber in der Vergangenheit waren auch andere Tamedia Seiten betroffen. Siehe auch: http://securityblog.switch.ch/2016/02/10/attack-of-the-killer-ads/

Re: [swinog] .ch registrars : goodbye nic.ch, but where to go then ?

2015-05-11 Diskussionsfäden Daniel Stirnimann
mind, please send me the name of the registrar directly. We are also in the process of implementing a DNSSEC test procedure which registrars have do before they can send/receive DNSSEC data over EPP. Maybe we should have done this earlier. Daniel -- SWITCH Daniel Stirnimann, SWITCH-CERT

Re: [swinog] Troubles with IPv6 queries to whois.nic.ch?

2015-04-27 Diskussionsfäden Daniel Stirnimann
- ___ swinog mailing list swinog@lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog -- SWITCH Daniel Stirnimann, SWITCH-CERT Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland phone +41 44 268 15 15, direct +41 44 268 16 24 daniel.stirnim...@switch.ch, http://www.switch.ch

Re: [swinog] Troubles with IPv6 queries to whois.nic.ch?

2015-04-27 Diskussionsfäden Daniel Stirnimann
The mentioned problem turned out to be a bug in whois.nic.ch when handling IPv6 requests. The bug only appears in rare events. We will of course fix it. Daniel On 27.04.15 10:38, Daniel Stirnimann wrote: Hello Benoît I'm not sure at what time and from which IPv6 address you tried. I just

Re: [swinog] .com registrar that offers DS records and IPv6 Glue

2014-05-23 Diskussionsfäden Daniel Stirnimann
Hi Benoit, I have no recommendation but the following might still be of interest. ICANN publishes a list of registrars which support DNSSEC (last updated March 2014) https://www.icann.org/resources/pages/deployment-2012-02-25-en I randomly picked one in Europe joker.com. They seem to support

Re: [swinog] nic.ch no NS

2014-05-07 Diskussionsfäden Daniel Stirnimann
nic.ch is in the ch zone itself. So it's not a zone of its own. You will find it in whois so that people see that it's not available anymore. btw. SOA record reveals that: dig nic.ch soa ; DiG 9.8.5-P1 nic.ch soa ;; global options: +cmd ;; Got answer: ;; -HEADER- opcode: QUERY, status: