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AfterLogic Forum : MailBee.NET SMTP

Topic: is this a bug?

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shaokao
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Joined: 08 May 2008
Location: China
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Posts: 9

Posted: 10 May 2008 at 3:45am \| IP Logged

when i try to use log in multithread with multi smtp instance,it throws some exception

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2207

Posted: 10 May 2008 at 4:26am \| IP Logged

What is the name of the exception? Maybe, your server does not allow multiple simultaneous connections from the same IP address.

Regards,
Alex

shaokao
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Joined: 08 May 2008
Location: China
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Posted: 12 May 2008 at 11:51pm \| IP Logged

MailBee.MailBeeIOException: IOException occurred. InnerException message follows: 文件“D:\Work\MailPolicy\FundEmail.Server.MailPol icy\bin\Debug\log.txt”正由另一๢ 7;程使用，因此该&# 36827;程无法访问该ਧ 1;件。 ---> System.IO.IOException: 文件“D:\Work\MailPolicy\FundEmail.Server.MailPol icy\bin\Debug\log.txt”正由另一๢ 7;程使用，因此该&# 36827;程无法访问该ਧ 1;件。
   在 System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   在 System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
   在 System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   在 System.IO.StreamWriter.CreateFile(String path, Boolean append)
   在 System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize)
   在 System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding)
   在 MailBee.Logger.a(Boolean A_0)
   --- 内部异常堆栈跟$ 394;的结尾 ---
   在 MailBee.Logger.a(Boolean A_0)
   在 MailBee.Logger.b(String A_0, String A_1, LogMessageType A_2, ec A_3)
   在 a3.a(MailMessage A_0, String A_1, EmailAddressCollection A_2, DeliveryNotificationOptions A_3, Smtp8bitDataConversion A_4, Boolean A_5, SendFailureThreshold A_6, Int32 A_7, be A_8, Boolean A_9, DataTable A_10, Int32 A_11, String A_12)
   在 er.a(String A_0, EmailAddressCollection A_1)
   在 er.a(Boolean A_0, String A_1, EmailAddressCollection A_2)
[16:10:13] any||2:MailBee.MailBeeInvalidArgumentException: At least one DNS or SMTP server must be specified in order to send mail.
   在 a3.a(MailMessage A_0, String A_1, EmailAddressCollection A_2, DeliveryNotificationOptions A_3, Smtp8bitDataConversion A_4, Boolean A_5, SendFailureThreshold A_6, Int32 A_7, be A_8, Boolean A_9, DataTable A_10, Int32 A_11, String A_12)
   在 er.a(String A_0, EmailAddressCollection A_1)
   在 er.a(Boolean A_0, String A_1, EmailAddressCollection A_2)

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2207

Posted: 13 May 2008 at 4:27am \| IP Logged

This exception is thrown because you have many threads attempting to write into the same log file simultaneously.

To synchronize access to the log file, use SyncRoot property of Logger class:

Code:

object sync = new object();

Smtp mailer1 = new Smtp();

mailer1.Log.SyncRoot = sync;

Smtp mailer2 = new Smtp();

mailer2.Log.SyncRoot = sync;

... etc ...

Regards,
Alex

shaokao
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Joined: 08 May 2008
Location: China
Online Status: Offline
Posts: 9

Posted: 13 May 2008 at 11:30pm \| IP Logged

thanks

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