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shamora
Newbie
Joined: 21 May 2013
Location: United States
Online Status: Offline
Posts: 7
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| Posted: 21 May 2013 at 3:07pm | IP Logged
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I use multi threads and each one is making a connection to a smtp server like this:
Smtp mailer = new Smtp();
server.Name = list[0];
server.Port = Convert.ToInt32(list[1]);
server.AuthMethods = AuthenticationMethods.Auto;
server.AccountName = list[2];
server.Password = list[3];
mailer.SmtpServers.Add(server);
then I run
mailer.Connect();
mailer.Hello();
mailer.Login();
then I create the message including headers
mailer.Message.XMailer = myXMailer;
mailer.Message.Headers.Add(name, value, true); //(inside a foreach loop)
mailer.Message.From = new EmailAddress(list2[0], list2[1]);
mailer.Message.ReplyTo.Add(list2[3], list2[4]);
mailer.Message.Subject = subject;
mailer.Message.BodyPlainText = body;
mailer.Message.To.Add(list3[0], list3[0]);
I have a check button in settings for using MIME encoding and when is checked I wanna encode subject and body but it is sent exactly as the normal one.
if (Globals.USE_MIME)
{
//test code
MailMessage mime = mailer.Message;
mime.Charset = "utf-8";
mailer.Message = mime;
//end test code
}
I haven't found anything related to this in your documentation files.
Also I end up using the following code:
try
{
flag = mailer.Send();
}
I don't know if it's the best solution because it is sending only half of the emails, others are not sent.
Can it be because I call the same function using multi-threads ?
I have these 2 problems so I kindly ask you for some help.
Thank you!
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6104
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| Posted: 21 May 2013 at 11:52pm | IP Logged
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Do you get a different behavior if you try using MailMessage.EncodeAllHeaders to encode headers explicitly?
As for issues with sending mails out, I don't think threading might be causing this. The typical reason is SMTP server rejecting mails, for instance, due to attempts to send out a large number of those.
--
Regards,
Igor, AfterLogic Support
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shamora
Newbie
Joined: 21 May 2013
Location: United States
Online Status: Offline
Posts: 7
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| Posted: 22 May 2013 at 3:12am | IP Logged
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thank you Igor for your quick response!
I asked about mailer.Send() because I read that it doesn't send the messages asynchronously and maybe it has something to do with it.
Regarding the mime encoding, I read about MailMessage.EncodeAllHeaders but in the example I found it says that it's loading headers from eml files and I can't write and read the headers everytime on every thread started, it will slow down the performance a lot.
If you have any other suggestions please hit me up cause right now I'm out of ideas.
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6104
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| Posted: 22 May 2013 at 3:30am | IP Logged
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EncodeAllHeaders method can be used regardless of how exactly the message is built. You can create a message in the code the way you do, or load that message from a file, the idea stays the same: prior to sending message out, force encoding the headers and see if that helps.
--
Regards,
Igor, AfterLogic Support
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shamora
Newbie
Joined: 21 May 2013
Location: United States
Online Status: Offline
Posts: 7
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| Posted: 22 May 2013 at 4:03am | IP Logged
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well Igor, I guess the encoding is working now, but when I save to eml it shows:
X-Mailer: MailBee.NET 7.3.2.411
so it ignores the custom defined x-mailer, but in the email received the header is ok, it shows the custom one.
thanks for your time!
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6104
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| Posted: 22 May 2013 at 4:14am | IP Logged
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Interesting.. At which point of your code exactly you're calling SaveMessage method?
--
Regards,
Igor, AfterLogic Support
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shamora
Newbie
Joined: 21 May 2013
Location: United States
Online Status: Offline
Posts: 7
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| Posted: 22 May 2013 at 4:43am | IP Logged
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this is the code I'm using:
if (Globals.USE_MIME)
{
MailMessage mime = mailer.Message;
mime.EncodeAllHeaders(Encoding.UTF8, HeaderEncodingOptions.Base64);
//mime.SaveMessage(@"c:\test_eml.eml");
mailer.Message = mime;
}
try
{
flag = mailer.Send();
}
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6104
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| Posted: 22 May 2013 at 6:36am | IP Logged
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Hm, looks like we're of out ideas here. I don't see why that wouldn't work with X-Mailer header - and since the recipient can see that header, that would mean the header is applied indeed.
--
Regards,
Igor, AfterLogic Support
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shamora
Newbie
Joined: 21 May 2013
Location: United States
Online Status: Offline
Posts: 7
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| Posted: 22 May 2013 at 6:43am | IP Logged
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well, if the header is not saved correctly to a local eml it doesn't bother me. It is sending correctly and that's important.
thanks again for your time and if there will be any other issues I will keep you informed. For the moment I'm just making tests.
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Topic: MIME encoding thru SMTP
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