I'd like to make a stripped down email client for my pre-schooler using Silverlight 3 and pulling email from a Gmail account.
I'll have some filters setup in Gmail so that only a subset of email is given a particular label, similar to creating a whitelist. Then, I'd like to pull those emails with that label to the Silverlight client. I'd like to avoid running any of the messages through the server (so that I can share this application with friends and not have their email app require a server).
I've never written any sort of email client (POP3 or IMAP) and am not sure if this will even be possible. Looking through the various libraries available for retrieving via IMAP, I can't find references to using a browser-limited client such as Silverlight.
Also, I'm guessing I'll be able to send via .NET built in SMTP objects in Silverlight, but haven't tested this yet either.
Can anyone point me in the right direction; tell me why this may or may not be feasible; or relate their own experiences regarding this type of challenge?
Silverlight does not yet allow arbitrary socket connections, which you would need to connect to an IMAP server on the privileged port of 143. Silverlight can only connect to servers, even with a client access policy file, on ports 4502-4534.
Your only options are to proxy to gmail via a server on those ports, or just do the IMAP work on the server and serve it down to the client app over HTTP.
Sorry about this-- enhanced socket support is always being looked at, but it has scary security implications and hasn't been implemented yet. Good luck finding a solution to your scenario.
There is a great example of a Silverlight based mail client here:
http://silvermail.com.au
I use this regularly to check my personal email from work, and I know that it works with GMail.
Hope that helps.
Related
I need a SMTP server for Windows Server 2012 so that I will be able to intercept incoming emails from my C# application and display it to my clients via an ASP.NET application. Sorry if this would look like a trivial question but i cant figure out where should i start from.
The most obvious Windows SMTP server is Exchange, although there are plenty of free ones (XMailServer, MailEnable or the lighter-weight Papercut, which might serve your purpose) - I've not used anything other than Exchange, but a Google search will find you a tonne of them.
Is this just for sending messages from client to server, though? Unless there's some reason you need to have these messages as emails, it seems unlikely the overhead of setting up an entire email system, sending an email and then extracting the message and putting it into a web page is the best solution to your problem - have you considered a lighter-weight client-server messaging system, such as DotNetMQ or simply sending your own messages directly through TCP sockets?
Im looking to send email vi a .net 3.5 form (C#)
Ive seen a few posts elsewhere and got the thing running ok for certain addresses but not for others, eg gmail accounts.
The finished app will have to pick up addresses from a database so Im having to cater for a lot of possibilites.
Im not looking to have my work done for me, just a shove in the right direction would be cool!
thanks
DD
Is it possible the gmail accounts are blocking you as a spammer? If you're sending out a lot of emails, or if there is a configuraiton issue on your server, they may have blacklisted you.
If the emails are going out from your server OK, but not reaching ALL of the recipients but is reaching SOME, then there is likely an issue outside of your direct control. An email goes through several servers in between your server and the enduser's inbox (and that's the case even if the inbox is on google's server for gmail.)
That said, there are things you can do to reduce your likelihood of being blocked/blacklisted.
This is a good place to start: http://www.andreas-kraus.net/blog/tips-for-avoiding-spam-filters-with-systemnetmail/
and then here is where to go from there. (Sorry - it's just a google search, but I gave you the relevant terms, at least.) http://www.google.com/search?q=system.net.mail+blacklist+spammer&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1
Finally, here's a very good resource with a cool URL. Perhaps the force will be with you if you learn these ways, young padawan.
http://www.emaildeliveryjedi.com/avoid-spam-filters.php
But getting back to your original question - everything you need to know about how to write code to send an email is covered here: http://www.systemnetmail.com/ It's the same for all versions of .NET from 2.0 on uo through the current 4.0.
And I'm sure you're already aware, but in case you're not, be sure you're familiar with the CAN-SPAM act. http://business.ftc.gov/documents/bus61-can-spam-act-compliance-guide-business
In addition to the great info from David Stratton...If you're certain that the gmail accounts are not receiving your emails, i.e. you've waited for sometime, checked the gmail spam boxes, and you've checked your SMTP server logs to ensure that Google is not sending any particular messages back to your SMTP server, then you may have run into a case of grey-listing / black-listing.
Black-listing can occur when a mail service has decided that the IP address of your mail server is a spamming server. It can happen under different scenarios, shared scenarios can be quite common.
One shared scenario: Let's say you recently acquired a new IP address, but it was recycled by your hosting provider from a prior client of theirs, who was a spammer. There is no guarantee that the IP address would be white-listed.
Another shared scenario: You're sending emails on a shared hosting website, where your SMTP service that you are using is shared with other clients of the SMTP service provider. It may be that one of those clients used the SMTP service maliciously or without following appropriate SPAM rules that gmail abides by.
Your best bet is to contact Google to commence a white-listing process. Providing you follow their requirements, they should eventually unblock emails originating from your service.
Can anyone recommend a simple and reliable method of sending email notifications and possibly log files attachments from a C# program without requiring the installer or the user to configure the program by specifying server details and email addresses etc.
(Mainly because they won't know the details, but also because they could change)
The program will normally be run as a service of a Windows Server, but can be run on a client.
I tried connecting to our own mail server and sending a email to myself, but some ISP's are blocking Port 25 on all servers but their own, so that method isn't working reliably.
Tried sending email through gmail but that was less successful as the port they used was blocked by firewalls. Ditto webservices connecting on weird ports.
Trying to use the local smptservice but did not work either.
It would be nice, but not essential if it was not dependant on my own Internet connection/Servers. (Don't mind them being delayed, but prefer them not to get lost).
Are there any webservices on http/https that allow you to do this sort of thing?
TIA
try using cdosys
http://support.microsoft.com/kb/310212
http://www.eggheadcafe.com/articles/20030316.asp
May have discovered the solution.
Was catching up on my blog reading over the weekend and came across a recent entry on Coding Horror and the very first comment mentions PostMarkApp which seems to do everything I need (and almost everything I want, apart from attachments which they are considering).
I would like to track messages sent and received though Windows Live Messenger. I would then like to collate these messages into a database (not in the scope of this question).
The question is how and where should I track these messages. The simplest way it to force all clients to keep history files and read those, but it is not really the solution that I am looking for. Is there a way to track them from a server running in the same domain, I have read a little into Windows Communicator, I have also seen a lot of people chat about http://dev.live.com/messenger/ but I was hoping that someone may have addressed this problem already :)
I would like to do this using C# .NET 3.5
Check out MSNPSharp. Its a .NET msn library. Its very powerful and allows you to sign in from multiple locations. So you can sign in and listen to other conversations happening on a given account.
Its very straight forward to use. Download the full source code, there's a sample application that demonstrates its use in full detail.
http://code.google.com/p/msnp-sharp/
Here is two idea that might work.
The first one is the easiest but can be easily avoided by the user if he doesn't want to be logged. It would be to use MSN Plus over the MSN. With MSN Plus you have an API that let you get all messages from any Chat Windows... and a lot more. Of course, if the user is not you, the user can simply uninstall Msn Plus and your program will not log any data.
The second idea is better if you have a network that you require to check all Msn Conversation. If you use WireShark you can see that conversation are not crypted (well the last time I did it) and you can check the port and protocol to simply get the data from the network.
Hope it gives you a way to what you need.
Just two ideas
1. First the standard MSN protocol is plain text (from what I understand) so you could intercept the messages on the firewall and then put them in the DB and do the correlation there.
2. If this is in an organisation you could use Office Communicator which is the "corporate" version of MSN and has that functionality built in already. You can then just go in via their SDK and get the correlated data.
I managed to find two ways of doing this, though both are not really programmatic solutions, so may not appeal to this audience.
Make use of a Jabber gateway to set up forwards between your jabber client and the other IM networks. Traffic flows between your jabber enabled client and the jabber server via the jabber server. The Jabber server then translates this to the destination networks protocol and forwards the message. Likewise messages from the external IM networks are routed and translated by the Jabber server. An example of this is PSI <-> IceWarp Merak <-> MSN
Make use of Symantec IM Manager to intercept messages from the messaging clients on your network. You will need to either use host files or local DNS rules to convince the your local PCs that Messenger.hotmail.com is actually located at 192.168.0.59 and not at Microsoft.
Hope it helps other people that may want to do the same.
Is there an easy way to create an IM bot on multiple im networks (aim, gtalk, yim, etc) that can accept and interpet specific commands sent to it to perform a server related task?
Lets say for instance I have a website for managing an rss feed. I want to send a command to an IM bot to add another feed to my collection. the IM bot would associate my screen name with my account from prior setup on the website.
I have done some internal bots for my company using the XMPP (Jabber) protocol, I've used the agsXMPP SDK and the Jabber.NET client libraries, I was looking for APIS to work with YIM, AIM and Windows Live Messenger but I've found only COM exposed APIS, nothing for .NET...
But an idea comes to my mind, with the XMPP Protocol you can configure a local server with IM Gateways, that allow users to access networks using other protocols through your server
I use eJabberd, you can install a variety of transport gateways to connect with other IM protocols (AIM, MSN, ICQ, GTalk...
To GTalk you can connect directly using the libraries I mention...
A sample ICQ gateway:
The short answer to this question is yes this can be done relitivly easily. Sedning and receiving IMs sending, receiving and interpreting requests from the network you wish to communicate on and there are libraries available for each of the major IM protocols to make this easier.
For messenger you can try the DotMsn library, I have used it in the past but at that time it was still quite new and I have not used it since so I can't vouch for it's quality.
Jabber uses the XMMP protocol which is an open-standard so there are bound to be plenty of client libraries available.
If I recall correctly Google Talk uses this protocol or a modified version thereof.
I dont have experience with c# but I have written one for AIM and Gtalk using PHP. http://www.imified.com/ is the best place to start if you looking for a easier way to write an IM bot.
Basically you create an account in imified.com .
Name your bot and link a script.
When ever a message is sent to the bot, imified.com automatically runs this script.
Here is a link for you get you started!
We have professional .NET/COM/VCL library for MSN/Yahoo/ICQ/AIM/GTalk/Jabber. Please take a look at http://www.imcomponents.com/ if you like.