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SBS 2003 smtp connector with gmail & stunnel

Last Modified: 2013-11-30
I have SBS 2003 server, I am using gmail apps account with mydomain.com emails.
I have configured stunnel so that my pop3 & smtp connectors could connect with gmail server with SSL
I am able to receive emails as expected
I am able to send emails using smtp connector but...
recipient outside domain is getting from address of the user1@mydomain.com as smtpaddress@mydomain.com
I want that it should be user1@mydomain.com
I know this is gmail limitations. But if I can use separate smtp authentication with each user then the problem could be rectified.

but smtp connector can use only one credential for all users to allow outgoing..
this modify email address to the address that I have used in smtp connector..

Is there any way in sbs 2003 to map users own smtp credentials while sending emails through sbs smtp connector.

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Akash BansalIT Professional


IT Professional
This one is on us!
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Cris HannaSr IT Support Engineer

I know you're going to close this and that's ok...just curious as to why you'd purchase a product that has it's own exception SMTP mail server offering tons of collaberation features and then sign up for Google Apps?
Akash BansalIT Professional


No guaranteed uptime of Internet connectivity over here so can not configure my SBS as dedicated email server.
Secondly we can not get ROI if we go for Leased Internet So required hosted email services.

I signed up Google apps to get free hosted email services.
I have the same problem. What third party pop3 connector did you use to overcome it?

Akash BansalIT Professional


Thank you. This looks very promising, I'm in the midst of installing it. I went through a dozen other pop3 programs that lacked the SMTP out feature. I tried contacting google apps, they were no help.

Do you have any tips for installing exchangepop3 on SBS? What did you do about the SBS's own POP3 connector? Disable it somewhere, or just leave it be?

To answer my own question you can just delete the pop3 connectors in the SBS standard console. The email accounts remain and you can add the SBS pop3 connectors back later if needed, but you won't need to.

The eXchangePOP3 program is great. It completely solves the problem. It was listed for $150. The trial version is supposed to be full featured, and it works, but after only 4 hours it thinks the 30day trial license has expired. Anyway it's worth buying to fix the problem, only solution I've seen anywhere.

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