That article is crazy talk. Here's the code (all of it) using SubEthaSMTP:
class BounceListener implements SimpleMessageListener {
public boolean accept(String from, String recipient) {
return recipient.startsWith("deals-");
}
public void deliver(String from, String recipient, InputStream data)
throws TooMuchDataException, IOException {
int atIndex = recipient.indexOf("@");
String rec = recipient.substring(0, atIndex).replaceAll("=",
"@").replaceAll("deals-", "");
YourCode.markAsBad(rec);
}
public void main(String[] args) {
SMTPServer smtpServer = new SMTPServer(new
SimpleMessageListenerAdapter(new BounceListener()));
smtpServer.start();
}
}
Just "java -cp . BounceListener" and you're running.
I hate complicated frameworks.
Jeff
On Wed, Feb 24, 2010 at 2:22 PM, Tauren Mills <[email protected]> wrote:
> Jeff,
>
> That's great to hear! I actually am already considering using
> subethasmtp to build my mailer with. However, I'm currently leaning
> toward using James just because I found a resource explaining how to
> easily do VERP with it:
> http://cephas.net/blog/2006/06/09/using-apache-james-and-javamail-to-implement-variable-envelope-return-paths/
>
> Is this fairly easy to accomplish with subethasmtp as well? The fact
> that you recommend it, are using it, and developing it makes me want
> to really reconsider looking into it further.
>
> Thanks again, you've provided some great insights!
> Tauren
>
>
> On Feb 24, 9:36 am, Jeff Schnitzer <[email protected]> wrote:
>> FWIW, I run the "offsite" portions of my application (proxies for
>> apple's push notification service and proxies for services that get
>> ratelimited from appengine) in Rackspace Cloud on a single $11/month
>> virtual server. Works great - static IP, forward and reverse DNS.
>>
>> Here's one of my opensource projects, it may help you process bounce
>> notifications:
>>
>> http://code.google.com/p/subethasmtp/
>>
>> Good luck,
>> Jeff
>>
>>
>>
>> On Wed, Feb 24, 2010 at 2:42 AM, Tauren Mills <[email protected]> wrote:
>> > Jeff,
>>
>> > Thanks for your feedback. I'm thinking you are probably right that GAE
>> > isn't the best solution, especially since you are confirming my
>> > concerns about VERP. It's too bad this isn't possible, because it
>> > seems like GAE would provide a fairly effective way to implement this
>> > solution in an extremely scalable manner.
>>
>> > I may be mistaken, but it seems like an advantage to doing this on GAE
>> > via the Mail API is that mail is sent using a mail server that Google
>> > manages. This means that it is unlikely to get blacklisted by other
>> > ISPs. I've had troubles with my mail servers being blacklisted because
>> > of certain customers abusing it. This shouldn't be a problem for my
>> > webapp, since the mail server will only send mail to registered users.
>> > Bottom line is that mail servers in general are something I really
>> > don't care to hassle with.
>>
>> > Also, I don't think that EC2 would be the best platform. Without
>> > reverse DNS control and truly static IPs, hosting a mail server might
>> > be problematic. As far as I know, they don't provide a Mail API, so
>> > it would be back to simply managing my own mail server and the
>> > headaches that go with it.
>>
>> > Rackspace Cloud might work since they provide a static IP and their
>> > Fanatical Support person told me they can change reverse DNS for me.
>> > But I'm still managing my own mail server. They do not provide an
>> > SMTP server for cloud users.
>>
>> > I just came across a service called JangoSMTP that seems to do much of
>> > what I need. Unfortunately, if I want to send a single email to all my
>> > 1000 users each day, I'm looking at spending $180/mo or so. But it
>> > includes an API, supports DKIM, handles bounces, and even supports
>> > feedback loops.
>> >http://www.jangosmtp.com/How-It-Works.asp
>>
>> > It looks like I may just have to manage my own server using a
>> > traditional dedicated or VPS server.
>>
>> > Tauren
>>
>> > On Feb 24, 12:46 am, Jeff Schnitzer <[email protected]> wrote:
>> >> One thing to watch out for is that GAE's mailer won't send
>> >> multipart/related emails, so you cannot embed images in your mail.
>> >> You can link to external images but that's nearly useless these days.
>>
>> >> Considering your VERP requirement, you're probably better off running
>> >> the email-sending portion of your app in EC2 or Rackspace Cloud (or
>> >> whatever).
>>
>> >> Jeff
>>
>> >> On Tue, Feb 23, 2010 at 2:19 PM, Tauren Mills <[email protected]> wrote:
>> >> > I have a webapp that needs to send out customized mail to its users. I
>> >> > have thousands of users and need to send messages to them such as
>> >> > account activation notices, changed password notices, daily status
>> >> > reports (activity summary, action items they need to do, etc.), and
>> >> > alerts/reminders at specific times. Each message that is sent out is
>> >> > customized for a particular user. Once every few weeks there might be
>> >> > mass-emailing of the same message to everyone that announces new
>> >> > features or changes to the webapp.
>>
>> >> > Currently, the webapp is not on GAE, but may be in the future. At the
>> >> > moment I'm considering using GAE as a platform for the mailer service.
>> >> > This is so that I can scale up the mailer service as needed without
>> >> > having to maintain the infrastructure inhouse.
>>
>> >> > The basic idea is that I would build an application on GAE that has a
>> >> > RESTful interface. My app could then add messages to the send queue
>> >> > via that interface. The GAE mailer app would then use GAE's Mail
>> >> > api's to send out the messages. My webapp would also have a RESTful
>> >> > interface that the mailer service would use to communicate bak
>> >> > information about errors, bounces, and so forth.
>>
>> >> > 1. Is this a reasonable sounding solution? Any suggestions for
>> >> > improvements? What are the drawbacks?
>>
>> >> > 2. I'm assuming there isn't anything that would prevent me from having
>> >> > DKIM and other technologies to help reduce my mailings as being
>> >> > flagged as spam. Is this a valid assumption?
>>
>> >> > 3. I need to have bounce detection support and was planning to use
>> >> > VERP to do so. Since it appears GAE may limit the sending email
>> >> > addresses, I'm concerned this may not be possible. Is there any way
>> >> > to use GAE mail apis and support VERP?
>>
>> >> > 4. Are there any existing services that already do this? Any open
>> >> > source projects that would help get me part way?
>>
>> >> > Thanks!
>>
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