How to configure Domino to use an ISP for mail routing with SMTP after POP3 authentication?

Hello Experts

For historical reasons, I'm running Domino for my tiny company (Domino 6.5.1). Since the server is a standalone box, I decided to work with an ISP for web and mail. From the ISP, I download mail using a third-party utility which logs onto all POP3 accounts of the ISP, downloads the mails and delivers them to Domino as SMTP mails. The utility performs some virus scanning at the same time.
For outbound mail, I have configured the Notes clients to send mail directly to the ISP. Clients log on to the ISP with SMTP after POP3 and deliver their mail to the ISP.

This configuration works great so far. However, for a number of reasons, I'd prefer to use the Domino Server as a relay and let the server submit the mails to the ISP. The ISP says that he requires SMTP after POP3 authentication.

In Domino, I understand that I can configure a "Relay host for messages leaving the local internet domain" in the configuration document; this appears to be the right setting. However, I have not found a way to tell Domino to authenticate to the relay (SMTP) host. On the client, this would be an account document.

Does anybody have an idea how to solve this?

Thanks
Jan



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fulscherAsked:
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Bozzie4Connect With a Mentor Commented:
So to my knowledge, Domino does not support this.

What you can do, is install a mailserver that does support this (like PostFix).  First relay your mail from the Domino server to the Postfix, and let Postfix relay the mail to the ISP's authenticated smtp server.

cheers,

Tom
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Bozzie4Commented:
Talk to the ISP, they must have relay servers you can use without authentication.  If not, you don't really need to use the relay server of your isp (although it helps if you happen to be on dsl or cable or something).  


cheers,

Tom
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fulscherAuthor Commented:
Bozzie4 - Thanks for the input. I've tried sending SMTP mail directly without using the ISP as a relay; however, a number of hosts reject the mails from the server (probably because I'm hosted by a big provider who probably is in lots of blacklists). So, I need a relay.

After some more investigation, I've found a solution that works so far: there is a  utility smtpauth (http://netwinsite.com/dmail/smtpauth.htm) which handles precisely this situation. Basically, it pretends to be an SMTP server. When somebody connects to it, it immediately opens an SMTP session to the real SMTP server and logs in; after that, it transfers whatever it receives. However, this solution is a bit clumsy. Using Postfix or an other mail server appears to be kind of an overkill.

I leave this Q open for a while. If you - or anybody else - have a better idea, I'll love to hear it...

Jan
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Bozzie4Commented:
It appears to work with Exchange too, if you run on Windows that could be an option (don't let it receive mail from the internet though :-) )

cheers,

Tom
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fulscherAuthor Commented:
Ok, looks like no more comments are coming. Thank you, Bozzie4.
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