The next SwiNOG meeting, SwiNOG #22, will be held at the Gurtenpark, Bern on 9 May 2011.
Registration will open soon and will be announced.
Call for papers will be sent today in a separate message.
17.03.2011 Announcement of Meeting
17.03.2011 Call for Papers
24.03.2011 Registration opens
18.04.2011 Call for Papers closing
25.04.2011 Final publication of agenda
01.05.2011 Registration closes
05.05.2011 Deadline for all slides
09.05.2011 Meeting day
Have a nice day,
Can someone from Bluewin/Swisscom please provide me with a list of all possible dynamic IP-ranges Bluewin offers to its customers?
I need this for a firewall rule that should give access to a service for all Bluewin customers.
Thanks a lot.
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
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
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
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
Can somebody from bluewin abuse team please contact me offlist? Problem
already reported to abuse e-mail but no answer yet.
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.
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
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.