toasters

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13513 discussions

meta: yahoo/hotmail/aol list users and DMARC
by Tom Yates 31 Jan '15

31 Jan '15

**PLEASE DO NOT REPLY TO THE LIST ON THIS MATTER.** Following a query by an aol user who kept getting unsubscribed, I did some digging, and the list has a problem with respect to mail from yahoo/ hotmail/aol, and a few other smaller domains. As far as I can tell, as summarised at http://postmaster-blog.aol.com/2014/04/22/aol-mail-updates-dmarc-policy-to-… , a few fairly large email providers have unilaterally implemented a policy called DMARC, and are now rejecting inbound emails that don't meet the policy requirements. In brief, the requirements are based on the content of the From: (the Header-From, rather than the Envelope-From) header line, and basically amount to "no mail may be sent with a From: line that matches our domain, from outside our domain). Until recently, this meant that whenever a list user from an afflicted domain sent mail to the list, noone inside an afflicted domain would receive it, and a bouncee would be generated for each such user. Recently, list traffic went up enough that sufficient bounces were generated to unsubscribe everyone on the list who was subscribed from an afflicted domain (47 users, the vast majority from yahoo and hotmail). They can resubscribe, and some have, but they will still not see emails from users in DMARC'ed domains, and if the list has another busy period, they'll all be unsubscribed-by-bounce again. As far as I can tell, the only remedy is to reconfig the list so that the From: address is set to a generic address, probably toasters(a)teaparty.net, rather than the actual sender (as it is now). This will mean that misconfigured autoresponders will send to everyone on the list, rather than to the sender as they do now. Before you ask, no, I am not willing to set it my own address, and sort through all the bounces manually. I've polled the other lists I'm on, and most (90%) of them seem to be ignoring the problem. I think DMARC is a rather foolish attempt to make the contents of the From: header reliable (at least as regards domain name), and am therefore inclined to ignore it, and say to yahoo/AOL/hotmail users that they need to subscribe from a provider with a bit more clue. But as usual I will be guided by you lot in this. If anyone feels strongly that the list should be reconfigured as described above, please let me know in the next week or two. If you have strong feelings the other way, it would be useful for me to know that also. And if anyone knows more about this than I do, and is aware of errors in the above, I'd value an off-list email even more. -- Tom Yates - http://www.teaparty.net

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tool to generate cifs I/O load
by Rhodes, Richard L. 30 Jan '15

30 Jan '15

I'm looking for a tool to generate a load onto a CIFS share from a Windows server. I see lots of comments out on the internet with folks using IOMETER to do this, but when I downloaded it I found that it doesn't support network shares. Any suggestions for a Windows tool to generate I/O onto a share? Thanks! Rick ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.

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CDOT domain joining with a prestaged account?
by Basil 29 Jan '15

29 Jan '15

Installing my first CDOT machine, and when we got to the point of joining the first CIFS SVM to the domain, we hit a snag. It looks like ontap expects to be creating the machine account. In 7-mode, if it finds an account where it wanted to create one, it would ask if we wanted to reuse that. In CDOT, it just failed. I'm checking to make sure it's not something else like credentials or access, but has anyone else tried this? What should happen in CDOT when you join a domain where the computer account already exists? Basil

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Everything in a qtree?
by Rhodes, Richard L. 22 Jan '15

22 Jan '15

Hi, Back about 7 years ago when we purchased our first NetApp systems we hired a NetApp consultant to help us set them up. One of the things he told me was to always put everything in a qtree. Whether it's a cifs shares, nfs export, or luns . . . put them in a qtree. I have followed that practice. I think part of this was that our NetApp systems are for a particular application and we use snapvault for some of the backups (luns and cifs shares). This is all on OnTap v8 in 7-mode. As I'm about to create some CIFS shares for other uses, I'm wondering if this is a good practice. The new shares would be volume snapmirror'ed to a DR site, but no snapvault. Any opinions are appreciated. Thanks Rick ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.

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why flexpod use cluster os?
by Iluhes 21 Jan '15

21 Jan '15

if it is a 2 node cluster. Why use cluster os?

5 4

Failed disks...
by Camillo Gornati 20 Jan '15

20 Jan '15

Hello all… We have a FAS2040, with 2 shelves, which are not under support… One failed disk on shelf A, purchased disks, but i am afraid that will take about 1 week to receive them. What could happen if another disk fails (there is no more spares)? There is no DATA at all on SHELF B, should i get one disk from shelf B and put on A? If another disk goes bad, is it possible to make SHELF B takeover? Is it possible to destroy the aggr on shelf B and add it to shelf A so we would have 12 spares? What you guys would do ? Thanks in advance!

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RHEL Kerberos root
by Edward Rolison 20 Jan '15

20 Jan '15

I'm hoping some of you fine folk can help my search for enlightenment. I'm working on getting Kerberos deployed across my environment. Our big stumbling point appears to be RHEL 5 and Kerberos root users. Specifically - RHEL5 hardcodes 'nfs' as a service principal to be used by 'root' for accessing an NFS mount. We've been looking at various different solutions, like creating an NFS user with uid 0, or (somehow) trying to map nfs <=> root on the filer. But was wondering - does anyone have a kerberized RHEL 5 environment? How are you handling root access? We've got RHEL 6 sorted, probably, because it looks like you can simply cut down your keytab to have 'just' root, which is then used for mounting/access etc.

1 0

cmod failover group
by Iluhes 14 Jan '15

14 Jan '15

Hi Folks,Do the failover group get generated by netapp intial install?Somehow I have a group call "0ba_fg" on the node that is called 06b. Looks like someone made a typo.But most importantly: It look like the policy for node mgmt IP only have 1 node in it, is that right? Should the second node be in the policy for mgmt1 for each node?the way it is setup now, will it failover? Logical Home Failover FailoverVserver Interface Node:Port Policy Group-------- --------------- --------------------- --------------- ---------------06a clus1 06a:e0a nextavail system-defined clus2 06a:e0c nextavail system-defined mgmt1 06a:e0M nextavail 06a_fg Failover Targets: 06a:e0M06b clus1 06b:e0a nextavail system-defined clus2 06b:e0c nextavail system-defined mgmt1 06b:e0M nextavail 0ba_fg FailoverGroup Node Port------------------- ----------------- ----------06a_fg 06a e0M0ba_fg 06b e0M

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new cdot NFS vserver. NFS mount point hang on I/O
by Iluhes 14 Jan '15

14 Jan '15

Hi Folks,New cdot isntall, new NFS vserver. NFS shares can be mounted OK on linnux and solaris clients.I can mkdir and touch files. Copy or move or DD or any I/O operation completly hangs the mount point, the process cannot be Control-C, and kill -9 does not even help

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Is it possible to copy a qtree to its own volume?
by Basil 13 Jan '15

13 Jan '15

I'm trying to take a qtree and move it into its own flexvol (7 mode). It has millions of small files, so robocopy or ndmpcopy are taking too long for the final pre-cutover sync of the migration. So far, the best option I can come up with is to use qtree snapmirror to copy it into a qtree in a new volume and share that qtree, however this isn't clean, and qtree snapmirror still has to span the filesystem. My other considered option was to use a volume snapmirror and then delete everything but the qtree that I need to keep on the destination volume once it's been split off, however this still leaves me with a cifs share pointing to a qtree instead of a volume. At least it would be a block copy instead of a filesystem copy, though. Anyone have any ideas? Basil

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