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EXIM/SMTP/Relay Help Needed for JNOS (Ham Radio BBS)

n2nov
Both my JNOS (ham radio bbs on the 44/8 network or n2nov.ampr.org) and my hosting server for client accounts resides on the same box in a COLO. With the current Exim handling the commercial clients, I just wanted to see how to set up to pass through to JNOS as a relay. The Exim on the host box is set up in JNOS as a non-44 network gateway for SMTP. I am sick of incoming or outgoing mail between JNOS and services like GMAIL not allowed to go through. So far email with MSN and Yahoo are working, but I fear the end is near because of what GMAIL is doing. The question is how do I set up the Exim to accept mail from GMAIL on behalf of the n2nov.ampr.org domain, take care of the secret DKIM/SPF handshaking and then forward it on to the IPIP encapped 44 address on the same box [through the tunnel] and also in reverse)? Here are the errors received from GMAIL: OUTBOUND TO GMAIL ----------------------------------------------------------------------------- This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: user@gmail.com host gmail-smtp-in.l.google.com [142.251.4.26] SMTP error from remote mail server after end of data: 550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks. To best protect our users from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26 for more 550 5.7.26 information. n41si1929133wms.89 - gsmtp ForwardedMessage.eml Subject: test 11:03PM From: user@email.org Date: 10/11/2021, 11:03 PM To: address@gmail.com test -- 73 de N2NOV user@email.org ----------------------------------------------------------------------------- INBOUND FROM GMAIL ----------------------------------------------------------------------------- R:211002/1518Z 28277@AL0Y.#NNJ.NJ.USA.NOAM LinBPQ6.0.21 Hello, Charles I am trying to send you an email and my emails to you bounce back for the following: Your message couldn't be delivered to user@domain.org because the remote server is misconfigured. See technical details below for more information. The response from the remote server was: 550 Please turn on SMTP Authentication in your mail client. mail-qv1-f49.google.com [209.85.219.49]:39441 is not permitted to relay through this server without authentication. Anyway, I just wanted to check if you still have issues making a NetROM connection to my node? From my end, I see things are working fine. But wanted to make sure. 73 de AL0Y -----------------------------------------------------------------------------

Comments

9 comments

Date Votes
  • cPRex Jurassic Moderator
    Hey there! I think this is a bit beyond what cPanel support intends to happen with Exim. Normally Exim is the only mail handler on the machine, running independently of other tools. I'm a firm believer of "most anything is possible" but in this case you'll need to do some research to see how those interact as I don't have any advice on my end for this particular situation.
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  • n2nov
    Hey there! I think this is a bit beyond what cPanel support intends to happen with Exim. Normally Exim is the only mail handler on the machine, running independently of other tools. I'm a firm believer of "most anything is possible" but in this case you'll need to do some research to see how those interact as I don't have any advice on my end for this particular situation.

    I would think that it would be some sort of proxy or relay situation. Maybe the ham radio part is the stumbling block. Think of it as another domain on another server. How would the main Exim accept traffic destined for another location, but use the Exim to handle the DKIM/SPF bits to satisfy GMAIL in both directions?
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  • cPRex Jurassic Moderator
    If the domains were truly on a separate machine, I'd recommend a SmartHost configuration as outlined here:
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  • n2nov
    If the domains were truly on a separate machine, I'd recommend a SmartHost configuration as outlined here:
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  • cPRex Jurassic Moderator
    There isn't a way to do that - that was just the example if it was a remote domain. You may want to post this question directly to the Exim users list to see if someone else has ideas on how to make these types of customizations.
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  • mtindor
    Interesting, but how can my Exim be set up as the smarthost instead?

    I'm an admin over on RR. Why don't you PM me over there, or email my username @gmail . I think we can get this figured out assuming we can work privately on this and actually expose all the useful email information instead of having to deal with the obsfuscation that we have to deal with here. I'll shoot you a PM on RR and you can respond if you want. Mike
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  • mtindor
    @n2nov and I got this sorted out. We (he) just added a section to the ROUTERSTART area in Exim Config advanced editor, we (he) added the file /etc/staticroutes with a couple of lines in it to direct certain mail traffic, and it's working fine. Mike
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  • cPRex Jurassic Moderator
    Nice!
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  • n2nov
    @n2nov and I got this sorted out. We (he) just added a section to the ROUTERSTART area in Exim Config advanced editor, we (he) added the file /etc/staticroutes with a couple of lines in it to direct certain mail traffic, and it's working fine. Mike

    In effect, the JNOS BBS on the 44 network itself becomes the smarthost for the EXIM after adding an smtp relay statement with the address of the EXIM in the autoexec.nos file of JNOS.
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