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SMTP Authentication

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janice miller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote janice miller Quote  Post ReplyReply Direct Link To This Post Topic: SMTP Authentication
    Posted: 27 July 2003 at 5:56pm

Does spamfilterISP support SMTP authentication passthur.  I have all my customers that use this feature, but spamfilterISP does not seem to allow this feature to passthur to my mail server.

I'm currently using iMail version 6.06 that has the smtp port modified to listen on 1025.  SpamFilterISP is running on the same box with a single IP address listening on port 25.  SpamFilterISP is set to forward to port 1025.  SpamFilterISP is generating the error message 557 which blocks this function.

There is too many users to have reconfigure to use iMail's port 1025.  I would rather have them use the SMTP authentication feature.

Am I doing something wrong?

Can this feature be supported in a future release?

 

Thank you,

Janice

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LogSat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2003 at 7:39pm

Janice,

SpamFilter does not support auth passthru. Please note that SpamFilter is designed to handle exclusively incoming email only, your users should use your existing SMTP server as their outgoing SMTP server in their email client configuration. There are several ways to do this without having to change their configuration.

I'm including below the content of another posting that can help.

Roberto
LogSat Software

================================================

There are several threads on this subject. The key point is that SpamFilter is designed to process you incoming email only. Your outgoing email must still go thru your existing SMTP server.

If you already added a new IP to the NIC, there is no need to change the port iMail listens on. You can then configure SpamFilter to forward email to eMail on the other IP and port 25. This allows all your clients to not change their configs, and still use iMail as their outgoing smtp server. 

If iMail takes control aof all IPs bound to the NIC, then the above solution will not work, and you will need to change ports. However, if your server(s) are behind a firewall, you can then configure SpamFilter to listen on a different port, 28 for ex., and then configure the firewall to take incoming traffic on port 25 and redirect it to SpamFilter's IP on port 28.

Following is a posting that deals with a configuration similar to yours:

==========================

We assumed that you only had access to one single IP from your provider, and the suggestions we ghave before were based on that. Yes, of course if you have multiple internet IPs available (not internal LAN IP, they have to be internet IPs) things are much simpler.

It's extremely easy to bind multiple IPs to a single NIC card in one computer. We've prepared some screenshots on how to do so, click here to view them.

We see that your MX record for comcast.net points to mx00.comcast.net (24.153.64.1). If that is what your clients use as their outgoing smtp server, and you do not want to change your clients configs (which is what we recommend), you will need to have SpamFilter listen on a different IP, let's say 24.153.64.2 for example. The only thing you will have to change then is the MX record so that it points to SpamFilter's IP, 24.153.64.2.

By doing that incoming email will go where the MX record direct it, SpamFilter in this case. SpamFilter will then forward it to your IMail server on 24.153.64.1. Your clients will not change a thing, and still point to your IMail at 24.153.64.1.

Hope this helps.

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janice View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote janice Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2003 at 1:49am

Would SMTP authentication be considered an incomming function?

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Frank Schreier View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Frank Schreier Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2003 at 5:53pm

iMail takes control of all IPs bound to the NIC! We are using Ipswitch iMail 8.01, no chance to change this now and in the future (as support told us).

But we are using a port mapper to direct incoming traffic for Spamfilter (as you described above), so everything is working fine on one box. 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2003 at 11:44pm

No, we do not currently plan on implementing SMTP auth, sorry!

Roberto F.
LogSat Software

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