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2934 discussions

Spam-Points if there is no SPF Record?
by Benoit Panizzon 15 Mar '11

15 Mar '11

Hi out there We got two customers (one is another ISP) pretending that they have observed, that Google, Sunrise and other Services have startet flagging their customer's emails as spam, because the sender domain has not SPF record. Not an 'non matching' SPF record, but the sender just dones not use SPF at all. From my point of view especialy an ISP should be very carefull with SPF. There are hundreds of customers using their email addresses via foreign SMTP Servers. So if you start using SPF als ISP you have to instruct your customers to use SMPT-Auth. Furthermore web based feeback forms and similar would not work anymore if the ip address of that web server is not published as valid sender. And not many mailers who do forward emails are SRS compliant. So what are your experiences out there? Has someone else observed some ISP having started penalizing emails from sender domains who don't use SPF? Mit freundlichen Grüssen Benoit Panizzon -- I m p r o W a r e A G - ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 07 CH-4133 Pratteln Fax +41 61 826 93 02 Schweiz Web http://www.imp.ch ______________________________________________________

4 3

bluewin.ch internal blacklist
by Sergey Cheremnykh 14 Mar '11

14 Mar '11

Hi all. Our mailserver is rejected by the bluewin.ch MX with reason "Connection not accepted from blacklisted IP address", but I found no entry in the usual blacklists. Can somebody from bluewin abuse team please contact me offlist? Problem already reported to abuse e-mail but no answer yet.

2 1

HVAC question
by Eric Moeschler 14 Mar '11

14 Mar '11

Hi there I am maybe a bit out of usual topics, but I am confident with the ability to hear some proper and useful advices as you guys work within IT room. I am planning on building a small server room, but before to call any professional to make a proper quotation, I am looking for some advices of HVAC cooling solutions and brands. I will want to cool about 15 kW of servers within 6 months and I except about maximum 50kW within two years. Are there any modularly HVAC systems that could be upgraded to deal with extra heat? Also as a rule of thumb what budget do you think I should plan for such system? I mean the HVAC unit only, not the work and all related work and operational costs. If you have brands or people to advice, please do not hesitate to send me a private message offline, any help appreciated. Eric

1 0

Re: [swinog] Spam-Points if there is no SPF Record?
by Oliver Schad 14 Mar '11

14 Mar '11

Am Monday 14 March 2011 schrieb mir Benoit Panizzon: > We got two customers (one is another ISP) pretending that they have > observed, that Google, Sunrise and other Services have startet > flagging their customer's emails as spam, because the sender domain > has not SPF record. Not an 'non matching' SPF record, but the sender > just dones not use SPF at all. > > From my point of view especialy an ISP should be very carefull with > SPF. Indeed. In my point of view, SPF is only useful in very special cases because the drawbacks are very wide spreaded and the benefit even small. Forcing SPF for cases where it doesn't fit is a very "interesting" step. Using SPF in a spam filter to give some minor positive weighting in the spam score is ok but to use it to flag spam? I can't imagine that somebody does that. It sounds very stupid to me. Regards Oli

5 4

Swisscom / IP-Plus prefix filtering
by Guazzoni Daniele, CH 10 Mar '11

10 Mar '11

Could someone from IP-Plus contact me offlist ? It seems that you have an incorrect prefix-filtering. regards ------------------------------------------------------------------ Daniele Guazzoni Senior Network Engineer Cisco Certified Network Professional Email: daniele.guazzoni(a)audatex.ch Audatex (Switzerland) LLC Zollstrasse 62 CH-8021 Zuerich Tel : +41 44 278 87 54 Fax : +41 44 278 85 15 Web : http://www.audatex.com <http://www.audatex.com/> Audatex , a Solera company "This e-mail, any associated files and the information contained in them are confidential and is intended for the addressee(s) only. If you have received this message in error please notify the originator and delete the email immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. E-mails to and from the company are monitored for operational reasons and in accordance with lawful business practices. Any opinions expressed are those of the individual and do not necessarily represent the views of the company. The company does not conclude contracts by email and all negotiations are subject to contract. We make every effort to maintain our network free from computer viruses but accept no responsibility for any viruses which might be transferred by this e-mail."

1 0

Mobile operator DATA ip ranges - for a 6 pack
by Reza Kordi 07 Mar '11

07 Mar '11

Hi Guys Any idea where to find the find the ip address ranges that mobile operators use worldwide for data networks gprs, 3g, etc. ? Without having to query RIPE db for hours. Best clue gets a 6 packs ;) Cheers Reza

1 0

Anti-virus solution for Linux mail server
by Philip Iezzi 04 Mar '11

04 Mar '11

Hi there We're a small Swiss hosting provider. Currently we host over 4000 IMAP mail accounts on Debian Linux mail servers (Postfix/Amavis/Spamassassin/ClamAV/Cyrus). As anti-virus solution we are using ClamAV over Amavis (amavisd-new) at the SMTP level. We are looking for a more professional anti-virus solution and would like to add another anti-virus engine as primary scanner engine. Our favorite is Kaskpersky Anti-Virus for Mailservers but Kaskpersky does not seem to offer any affordable license that would match our business type (KAV for Linux Mail Server for 50(!!!) mail "addresses": CHF 2043/year). Their price model doesn't make any sense for our business. We are ready to pay up to CHF 1000/year for an anti-virus scan engine but not much more than that. ClamAV is not too bad, but the reaction time upon new threats has always been a bit faster in commercial anti-virus solutions. I don't want to start a flame war about this, it's just my personal experience during the last couple of years. What other solutions are small hosting providers using next to ClamAV? What are you using? Thanks for your advice! Regards, Philip

5 4

SwiNOG-BE95 - Beer Event 95 - 7th of March 2011 @ Santa Lucia Wiedikon
by Steven Glogger 03 Mar '11

03 Mar '11

hi everybody here's the announcement for the next beer event. the facts for the next event: ----------------------------- Date: 7th of March 2011 Time: starting around 18.30 o'clock Location: @ the "Santa Lucia Wiedikon" near Triemli ZH http://www.bindella.ch/restaurants/uebersicht.php?restaurant_id=36&konzept_… Registration deadline: 06.03.2011 18:00 (monday) Registration: http://swinog.mrmouse.ch ----------------------------- Please register here: http://swinog.mrmouse.ch/ since we have to make reservations, i need to know who's coming and who not. If you cannot attend and you're registered please inform me asap (+41 79 277 92 35). -steven

1 0

Hostingprovider als Straftäter (german)
by Erich Hohermuth 24 Feb '11

24 Feb '11

Dear List, Sorry the source is german aswell... Die Rechtskommission des Nationalrats hat beschlossen, der parlamentarischen Initiative “Mehr Sicherheit bei Netzwerkkrinimalität” ( 08.418) Folge zu geben (s. Pressemitteilung von 18.02.2011). Die Initiative zielt darauf ab, die strafrechtliche Verantwortlichkeit der Hostingprovider zu klären und zu verschärfen. Aus dem Initiativtext: Regards Erich Quelle: [1] http://www.strafprozess.ch/hostingprovider-als-straftater/ CrossLinks: [2] http://www.parlament.ch/d/mm/2011/Seiten/mm-rk-n-2-2011-02-18.aspx [3] http://www.ejpd.admin.ch/content/dam/data/kriminalitaet/gesetzgebung/netzwe…

2 1

sunirse e-mail
by Walter Onda 23 Feb '11

23 Feb '11

Hello Could someone from Sunrise contact me off-list? Kind Regards Walter ____________________________________________________ Glattwerk AG ¦ Support: 0900 801 111 Internet ¦ Fax: +41 44 801 68 33 Usterstrasse 111 ¦ E-Mail: <blocked::mailto:info@glattnet.ch> info(a)glattnet.ch 8600 Dübendorf ¦ www: <blocked::http://www.glattnet.ch/> www.glattnet.ch Montag bis Donnerstag ¦ 08.00 - 12.00 13.30 - 16.30 Freitag ¦ 08.00 - 12.00 13.30 - 16.00 <blocked::http://www.glattwerk.ch/> www.glattwerk.ch <blocked::http://www.glattphone.ch/> www.glattphone.ch <blocked::http://www.glattvision.ch/> www.glattvision.ch

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