Hi all,
Sorry for reposting this. It just occured to me that this might be a
better place than irc for this. I see that synchronet always adds an Originator-Info header with outgoing mail that advertises too much information IMHO.
There doesn't seem to be a way to disable this other than commenting
out the appropriate line in the source and recompiling. Is there a
reason this is sent?
As far as i can see this header never made it past
an IETF draft and isn't an official part of the protocol.
Re: Originator-Info
By: Gats to DOVE-Net.Synchronet_Discussion on Thu May 21 2015 12:56 am
Hi all,
Sorry for reposting this. It just occured to me that this might be a better place than irc for this. I see that synchronet always adds an Originator-Info header with outgoing mail that advertises too much information IMHO.
It's for tracking back the source of an email message. This is the commit message (mine) in CVS:
Added the "Originator-info" header field for transmitted messages which will help track the original submission, especially when submitted via protocols other than SMTP.
There doesn't seem to be a way to disable this other than commenting
out the appropriate line in the source and recompiling. Is there a
reason this is sent?
Yes, to help track the source of emails.
As far as i can see this header never made it past
an IETF draft and isn't an official part of the protocol.
That's not a problem as far I can tell.
What exactly is your concern?
digital man
Synchronet "Real Fact" #54:
Synchronet Terminal Server introduced RLogin support w/v3.00c (2000).
Norco, CA WX: 64.2øF, 66.0% humidity, 12 mph SE wind, 0.00 inches rain/24hrs
---
þ Synchronet þ Vertrauen þ Home of Synchronet þ telnet://vert.synchro.net
What exactly is your concern?
If you telnet to the bbs from an interal network (10.0.0.0/8,172.16.0.0/12,192.168.0.0/16) your hosts internal ip and hostname is sent out to the world. Maybe i'm being paranoid but
shouldn't this be filtered out?
Re: Re: Originator-Info
By: Gats to Digital Man on Thu May 21 2015 11:13 am
What exactly is your concern?
If you telnet to the bbs from an interal network (10.0.0.0/8,172.16.0.0/12,192.168.0.0/16) your hosts internal ip and hostname is sent out to the world. Maybe i'm being paranoid but
shouldn't this be filtered out?
It's not being sent "out to the world", it's being sent to whomever you're sending emails to. I don't see any risk.
digital man
Synchronet "Real Fact" #62:
"Baja" (name of Synchronet PCMS compiler/languege) is pronounced "ba-ha". Norco, CA WX: 66.2°F, 55.0% humidity, 4 mph E wind, 0.00 inches rain/24hrs
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â– Synchronet â– Vertrauen â– Home of Synchronet â– telnet://vert.synchro.net
It's not being sent "out to the world", it's being sent to whomever you're sending emails to. I don't see any risk.
On 2015-05-22 00:13:16 +0000, Digital Man said:
Re: Re: Originator-Info
By: Gats to Digital Man on Thu May 21 2015 11:13 am
What exactly is your concern?
If you telnet to the bbs from an interal network (10.0.0.0/8,172.16.0.0/12,192.168.0.0/16) your hosts internal ip and hostname is sent out to the world. Maybe i'm being paranoid but shouldn't this be filtered out?
It's not being sent "out to the world", it's being sent to whomever you're sending emails to. I don't see any risk.
Maybe I am being a bit paranoid here, but the less superfluous
information in my emails headers the better as far as i'm concerned. At
the top of your head, would commenting out this header in the source
and recompiling break anything in Synchronet?
So, you can see exactly what internal IP I am coming from. In fact, I've seen where this can help people troubleshoot when spam is coming from their network and they don't know what machine is infected.
Re: Re: Originator-Info
By: Gats to Digital Man on Fri May 22 2015 11:33 am
On 2015-05-22 00:13:16 +0000, Digital Man said:
Re: Re: Originator-Info
By: Gats to Digital Man on Thu May 21 2015 11:13 am
What exactly is your concern?
If you telnet to the bbs from an interal network (10.0.0.0/8,172.16.0.0/12,192.168.0.0/16) your hosts internal ip and hostname is sent out to the world. Maybe i'm being paranoid but shouldn't this be filtered out?
It's not being sent "out to the world", it's being sent to whomever you're
sending emails to. I don't see any risk.
Maybe I am being a bit paranoid here, but the less superfluous
information in my emails headers the better as far as i'm concerned. At the top of your head, would commenting out this header in the source
and recompiling break anything in Synchronet?
No, it wouldn't break anything.
digital man
Synchronet "Real Fact" #0:
Development began in 1990 of the (unnamed at the time) Synchronet BBS software.
Norco, CA WX: 61.0øF, 66.0% humidity, 8 mph ENE wind, 0.00 inches rain/24hrs
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þ Synchronet þ Vertrauen þ Home of Synchronet þ telnet://vert.synchro.net
Ga> If you telnet to the bbs from an interal network
Ga> (10.0.0.0/8,172.16.0.0/12,192.168.0.0/16) your hosts internal ip and
Ga> hostname is sent out to the world. Maybe i'm being paranoid but
Ga> shouldn't this be filtered out?
It's not being sent "out to the world", it's being sent to whomever you're
sending emails to. I don't see any risk.
I work for an ISP, and our SMTP server does the same thing. The headers have this line when I send out a message from Thunderbird on my machine at home over
to my Gmail (or the BBS) account:
Received: from [192.168.1.100] ([68.228.145.200])
So, you can see exactly what internal IP I am coming from. In fact, I've seen where this can help people troubleshoot when spam is coming from their network
and they don't know what machine is infected.
~KenDB3
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â– Synchronet â– KD3net-Rhode Island's only BBS about nothing. http://bbs.kd3.us
So, you can see exactly what internal IP I am coming from. In fact, I've seen where this can help people troubleshoot when spam is coming from their network and they don't know what machine is infected.
I can see how this is handy. But that's not really pertinent for my
home network :-)
Sysop: | MCMLXXIX |
---|---|
Location: | Prospect, CT |
Users: | 325 |
Nodes: | 10 (0 / 10) |
Uptime: | 08:11:03 |
Calls: | 510 |
Messages: | 220571 |