CDO.dll or cdosys.dll

[Jerry C]

I am working on a program that gets mail messages from the default SMTP
server with iis 6.0 on windows server 2003. I am using the cdosys.dll in the
system32 directory. The reference Name is "Microsoft CDO for Windows 2000
Library".

On the machine there is a CDO.dll in the Program Files\Common
Files\System\MSMAPI\1033 directory.

The question is which one of these is the current dll. I also wonder if
there is better way to access mail messages in the SMTP server. Does the
dotnet framework have a object for this like system.net.mail that does this.

I am using the objects:
Dim objDropDir As New CDO.DropDirectory
Dim objMessages As CDO.IMessages
Dim objMailMessage As CDO.IMessage
Dim MailAttachments As CDO.IBodyParts
Dim MailAttachment As CDO.IBodyPart

to get messages in the drop directory (.eml files) open them and get any
attached file.

Thank you

 

[Steven Cheng [MSFT]]

Hi Jerry,

As for the CDO.dll , it is a Mail message component based on the MAPI
providers(work mostly as exchange client). While CDOSYS.dll is a standalone
library for SMTP messaging(not rely on the MAPI providers or exchange
server). Here is a knowledge base article mentioned the version information:

#Where to acquire the CDO Libraries (all versions)
http://support.microsoft.com/kb/171440

BTW, for the System.Net.Mail classes in .net framework, so far based on my
understanding, that namespace provide some classes for sending emails via
SMTP protocol. However, it doesn't support reading or parsing existing
email messages(file based).

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we

can improve the support we provide to you. Please feel free to let my
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rights.--------------------

 

[Steven Cheng [MSFT]]

Hi Jerry,

How are you doing?
Have you got any further ideas or still have any question on this issue?

Sincerely,

Steven Cheng
Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
(e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.
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--------------------

From: (e-mail address removed) (Steven Cheng [MSFT])
Organization: Microsoft
Date: Fri, 15 Aug 2008 06:34:56 GMT
Subject: RE: CDO.dll or cdosys.dll

 

[Jerry C]

Steven,

Thank you.
I will be using the CDOSYS.dll.

Even thought my question seems basic your answers and Knowledge saves me a
lot of time determining if I am using the correct technology for the given
task. You provide a valuable service.

Thank you
--
Jerry

Hi Jerry,

How are you doing?
Have you got any further ideas or still have any question on this issue?

Sincerely,

Steven Cheng
Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
(e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

From: (e-mail address removed) (Steven Cheng [MSFT])
Organization: Microsoft
Date: Fri, 15 Aug 2008 06:34:56 GMT
Subject: RE: CDO.dll or cdosys.dll

Hi Jerry,

As for the CDO.dll , it is a Mail message component based on the MAPI
providers(work mostly as exchange client). While CDOSYS.dll is a standalone
library for SMTP messaging(not rely on the MAPI providers or exchange
server). Here is a knowledge base article mentioned the version information:

#Where to acquire the CDO Libraries (all versions)
http://support.microsoft.com/kb/171440

BTW, for the System.Net.Mail classes in .net framework, so far based on my
understanding, that namespace provide some classes for sending emails via
SMTP protocol. However, it doesn't support reading or parsing existing
email messages(file based).

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we

can improve the support we provide to you. Please feel free to let my
manager know what you think of

the level of service provided. You can send feedback directly to my manager
at: (e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response

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Engineer within 1 business day is acceptable. Please note that each follow
u

 

[Steven Cheng [MSFT]]

You're welcome

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


--------------------

Subject: RE: CDO.dll or cdosys.dll
Date: Thu, 21 Aug 2008 06:58:00 -0700

Steven,

Thank you.
I will be using the CDOSYS.dll.

Even thought my question seems basic your answers and Knowledge saves me a
lot of time determining if I am using the correct technology for the given
task. You provide a valuable service.

Thank you
--
Jerry

Hi Jerry,

How are you doing?
Have you got any further ideas or still have any question on this issue?

Sincerely,

Steven Cheng
Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
(e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

From: (e-mail address removed) (Steven Cheng [MSFT])
Organization: Microsoft
Date: Fri, 15 Aug 2008 06:34:56 GMT
Subject: RE: CDO.dll or cdosys.dll

Hi Jerry,

As for the CDO.dll , it is a Mail message component based on the MAPI
providers(work mostly as exchange client). While CDOSYS.dll is a standalone
library for SMTP messaging(not rely on the MAPI providers or exchange
server). Here is a knowledge base article mentioned the version information:

#Where to acquire the CDO Libraries (all versions)
http://support.microsoft.com/kb/171440

BTW, for the System.Net.Mail classes in .net framework, so far based on my
understanding, that namespace provide some classes for sending emails via
SMTP protocol. However, it doesn't support reading or parsing existing
email messages(file based).

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we

can improve the support we provide to you. Please feel free to let my
manager know what you think of

the level of service provided. You can send feedback directly to my manager
at: (e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response

from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
u