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• Will this SPF record restrict delivery of email for the original domain?

  - by user199421

  As part of the product we offer we send emails on behalf of our clients. Because the emails don't come from an IP associated with the client they are sometimes flagged as spam. We advised some of our clients to add an SPF record approving us to send emails on their behalf. We saw immediate improvement in deliverability rates after making the change however one of our clients was notified by his hosting provider that the SPF record we suggested to add would "slightly restrict" all emails that don't come from our servers (including our client's own servers). The record we use is this: v=spf1 a mx include:ourdomain.com ~all So my question is if the warning we received about this is correct and if so why and what can be done to solve this (allow sending email both from original domain and by ourselves).

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• UITableView does not scroll to cell

  - by Sheehan Alam

  I am trying to scroll my tableview to the 2nd cell: [self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:1 inSection:0] atScrollPosition:UITableViewScrollPositionNone animated:NO]; I get the error: *** Terminating app due to uncaught exception 'NSRangeException', reason: '-[UITableView scrollToRowAtIndexPath:atScrollPosition:animated:]: section (1) beyond bounds (0). ' My tableview has 30 cells that are appearing with no sections.

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• regular expression with special chars

  - by xRobot

  I need a regular expression to validate string with one or more of these characters: a-z A-Z ' àòèéùì simple white space FOR EXAMPLE these string are valide: D' argon calabrò maryòn l' Ancol these string are NOT valide: hello38239 my_house work [tab] with me I tryed this: re.match(r"^[a-zA-Z 'òàèéìù]+$", self.cleaned_data['title'].strip()) It seems to work in my python shell but in Django I get this error: SyntaxError at /home/ ("Non-ASCII character '\\xc3' ... Why ?

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• Application deployment with Puppet

  - by michaeltwofish

  I'm new to Puppet and while I've been using *nix systems for many years, I've never worked as a sysadmin or in ops. I'm currently writing Puppet manifests for hosting a set of (PHP/MySQL/MongoDB, code in git) web applications. Clearly Puppet needs to have some knowledge of the actual applications because I'll set up a virtual host for each one, but I'm not sure whether Puppet should be managing things like code deployment and database creation. Is Puppet an appropriate tool for application deployment? If not, can you recommend a more appropriate tool?

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• Confusion about DNS for mail server

  - by Tyron Gower

  We have migrated to Office365, everything is working except one company cannot email us as its connecting to our subdomains email server. So, We have companionsoftware.com.au hosted through office365 and all the required DNS entries. All seems to be working fine. We then have a web server hosting our website companionsoftware.com.au and our subdomain email attachments.companionsoftware.com.au (pop3/smtp). now for this one company when they try and email [email protected] it's connecting to STMP on attachments.companionsoftware.com.au. Now attachments.companionsoftware.com.au and companionsoftware.com.au have the same ip address, but this is only affecting one person (that we know of) when they try and email us. Have i configured something wrong or is it their server?

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• How do I add a decorator to a class in python?

  - by Timmy

  how do I add a function with a decorator to a class? i tryed def add_decorator( cls ): @dec def update(self): pass cls.update = update @dec did not to with update im to use this with @orm.reconstructor in sqlalchemy.

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• How to tell IIS7 to allow POST to a text file (to solve 405)?

  - by meticulous

  If I want to allow HTTP POST to text files *.txt (i.e. I'm taking an example of what could be any static resource normally accessible by GET). The error is: Server Error 405 - HTTP verb used to access this page is not allowed. The page you are looking for cannot be displayed because an invalid method (HTTP verb) was used to attempt access. How can I accomplish this? Background: I'm using apps.facebook.com to hit my hosted facebook app and facebook sends HTTP POST now through to the iFrame hosting my app. This facebook behaviour has been around for a while but it's being forced now. In turn this forces me to make stuff available to the POST verb.

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• Is HTML considered a programming language?

  - by nihilist.myopenid.com

  I guess the question is self-explanatory, but I'm wondering whether HTML qualifies as a programming language (obviously the "L" stands for language). The reason for asking is more pragmatic—I'm putting together a resume and don't want to look like a fool for listing things like HTML and XML under languages, but can't figure out how to classify them.

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• how to hide backbar button in navigationbar in iPhone sdk

  - by Prerak

  Hi, In my iPhone App there are three views [ firstView secondView and thirdView} now I want to put Back Button in navigation bar in thirdview only which should take me to back secondview only for that i m writting this code in first view self.navigationItem.hidesBackButton:NO; and it shows the back button in both the views secondView and thirdView what I should do to hide back button in the the second view? please Help and Suggest. thanks.

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• How to find out if a method exists in Obj-C when given an NSString

  - by Justin

  I have a method as an NSString *. If it exists, I want to call it, and if not, do nothing. SEL eventSelector = NSSelectorFromString(eventSelectorStr); if ([delegate respondsToSelector:eventSelector]) { [delegate performSelector:eventSelector]; [delegate adapterDidFinishAdRequest:self]; } else { // Does not implement selector } This code does not work, since NSSelectorFromString will register the string as a selector, so respondsToSelector:eventSelector will cause a crash because the selector is actually invalid.

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• Would showing primary key to the public be potential security risk?

  - by Bilzac

  Well the question is self-explanatory. One more thing would be, if it is a security risk then please provide an example of what the user could do. In this case the primary key would be something like : "Product ID" Thanks!

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• Should the hostname of my VPS point to the dedi IP of my Domain or to to a shared one used for new account creation?

  - by thomas

  I leased a VPS which I want to use to sell shared hosting. 3 IPs - I call them A, B and C here for simplicity. Actual setup is: A=NS1.mydomain.com; host.mydomain.com and is used to set-up new accounts in shared environment B=NS2.mydomain.com C=dedicated IP for mydomain.com (SSL secured) The more I read about DNS, the more I get confused; thus my question: Is this configuration "Good Practice", especially the hostname pointing to A rather than to C? And what would be a better alternative?

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• Why can I not convert from List<IScreen> to List<IRenderable> even when IScreen implements IRenderab

  - by Blub

  Pretty self explanatory question, glad for any answer. For me it doesn't make sense. I don't care about losing information. I just want to concatenate all my lists that inherit IRenderable somehow into a single list and then call IRenderable methods on it. I have a feeling that this is some basic rule of programming I forgot...

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• Building a balanced binary search tree

  - by Znarkus

  Hi! Is there a method to build a balanced binary search tree? Example: 1 2 3 4 5 6 7 8 9 5 / \ 3 etc / \ 2 4 / 1 I'm thinking there is a method to do this, without using the more complex self-balancing trees. Otherwise I can do it on my own, but someone probably have done this already :)

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• iPhone: Hide the title of navigation bar without remove it

  - by Kenzo

  Hi, I have a customized navigation bar with a image background. I do want to show the title on the background but I need its text for the back button in the next view. How can I do it please? Thank you ps: self.title=@"" will not put (naturally) in the back button the previous title.

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• Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

  - by iyl

  I installed XEN on Ubuntu 8.04 using this tutorial: http://www.howtoforge.com/ubuntu-8.04-server-install-xen-from-ubuntu-repositories but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not xenbr0. I have a very basic IP setup, with a single static IP defined in /etc/network/interfaces. The only unusual thing is that my hosting (1&1) gave me a netmask 255.255.255.255, so I had to add the default gateway with this script: /sbin/route add -host 10.255.255.1 dev eth0 /sbin/route add default gw 10.255.255.1 Everything else is plain vanilla Ubuntu 8.04.

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• What is the world wide web? [closed]

  - by think123

  I don't know where to post this question, so please move it if necessary. Ok, so I've heard of how the professional hosting companies can create 'links' to the world wide web to register an unregistered domain. So that's where my question comes from. Is the world wide web a server to which servers link? Is it created by abstract linkage? I'm not sure. Also, what does it mean for the DNS to be updated throughout the whole world?

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• UIScrollview disable transparency

  - by Frank

  It seems that UIScrollview has a transparency set by default. I have a background image set as a subview in self.view. but the image is showing on my scrollview that's also on the subview layer. I want it to cover up the background image so the scrollview transparency is disable.

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• basic help for Nat configuration needed

  - by Klaes S.

  I have a server with a IP 1.0.0.5/24. This is the main IP address of the server, and now I have two other IP addresses for the server, they are 1.0.2.30/24 and 1.0.2.31/24. I want to make a VirtualBox running another OS accessible through the Internet, and only allow the specified IP to reach the virtual box. I'm new to iptables and therefore I need some basic help and getting started information about this. The hosting provider does not allow more than on MAC address per switch port, which means that I'm not able to make bridge as far as I know. Futhermore I want the host, to reject the extra IPs so its only the VirtualBox / virtual machine that accepts the request's on the extra IPS.

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• Using Yahoo local search query for iPhone

  - by robbmcmahan

  I'm using yahoo local search in an iPhone app and trying to query everything in a certain location. According to the api docs you can pass "*" to query and it will return everything. I've tried passing it several different ways, including the way below but it does not work unless I actually pass it a real query. Does anyone know how or what I need to pass to make it query everything? [self setQuery:[@"*" stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]]; Thanks

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• Form data upload from iPhone to PHP server via https

  - by Horace Ho

  Is there a good tutorial or sample project of how to upload data from iPhone to a self-owned web server? The project is like: A survey application on iPhone which stores the user input data in a plist When there is internet connection, the program will enable an "Upload" button When the Upload button is clicked, the program will upload the data via HTTP form submit (POST) The server is Linux + MySQL + Apache + PHP The data should be sent via a https:// connection

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• General question about Ruby Eigenclass/Singleton

  - by Dex

  module MyModule def my_method; 'hello'; end end class MyClass class << self include MyModule end end MyClass.my_method # => "hello I'm unsure why "include MyModule" needs to be in the eigenclass in order to be called using just MyClass. Why can't I go: X = MyClass.new X.my_method How is this type of pattern useful if I can't call it from an instance?

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• How to remove segment at index at 0 of UISegmentcontrol in iphone?

  - by Warrior

  I am able to remove the segment at index 1,2,3 etc but not able to remove the segment at index 0 . [self readGroupFromDatabase]; NSLog(@"the current teble desc count value is %d",[tableDesc count]);---->0 if([tableDesc count]== 0){ [segemntedControl removeSegmentAtIndex:0 animated:NO]; } i am getting this error : *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (-1( or possibly larger)) beyond bounds (5)' Please help me out.Thanks.

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• memory management objective c - returning objects from methods

  - by geeth

  Hi, Please clarify, how to deal with returned objects from methods? Below, I get employee details from GeEmployeetData function with autorelease, 1. Do I have to retain the returned object in Process method? 2. Can I release *emp in Process fucntion? -(void) Process { Employee *emp = [self GeEmployeetData] } +(Employee*) GeEmployeetData{ Employee *emp = [[Employee alloc]init]; //fill entity return [emp autorelease]; }

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• centos server shared files

  - by Kyle Hudson

  Hi, I am wanting to implement a multi-server specialised hosting environment. I currently have a cloud solution comprising of 3 centos boxes (2 lamp web servers, 1 mysql). What I am wanting to do is, implement a 5 server solution where they is 3 web servers, 1 mysql box and a fileshare. Basically I want the fileshare to host all the web files for the servers, the caching will remain on the individual servers and the sessions will be stored in mysql. So what I am asking is how do I map the servers to share the same "docroot"? Is it NFS? if so whats the best way about doing this? Thanks in advance.

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