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Questions tagged [relay]

57 questions
9
votes
2 answers

What does "relayed connection" mean?

I've seen this when receiving files over skype, and some other situations, but I don't know what it means.
RLA
  • 93
7
votes
1 answer

Postfix Relay Based on Recepient

What is the best practice when one has to implement this sort of ruleset in postfix: Email sent to a@example.com, b@example.com, etc ought to be relayed to smtp.a.example.com. Email sent to everyone else @example.com ought to be relayed to…
Chris Smith
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7
votes
3 answers

Connect through own TOR relay, make edge node traffic unreadable

I understand that one of the limitations of TOR is that whoever runs the edge node can read all the traffic running through it before it gets split up amongst the TOR cloud. Lets say you were an oppressive authority, or simply law enforcement, then…
cqm
  • 1,267
5
votes
2 answers

automatically encrypt and decrypt emails using gnupg (gpgrelay for unix)

My point of view related to email security is: whenever possible emails should be protected with PGP/GPG while transporting, but it doesn't have sense to store encrypted emails in local mailbox (this doesn't add to security but make complicated…
Powerman
  • 173
5
votes
1 answer

Using sendmail over SSH

I have a SSH access to the server with working sendmail provided by my hoster. I want to configure my local sendmail to use remote server as a relay. How can I do that? Is it posiible at all? Note: I can write script to run something like ssh…
Sergey
  • 193
3
votes
1 answer

Is there such a thing as a USB-controllable USB relay?

I am looking for a device that connects to two USB ports on a computer: a "Control" port, and a "Data" port. Both cords go to the same device, which also has one USB "out" port (3 ports total). If a certain signal (from whatever driver is loaded for…
Zac B
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3
votes
0 answers

Setting up a local RTMP Relay

I'm trying to live stream an online game, but I lag, so what I'm trying to do is find a way to setup my live stream client which lets me specify a custom RTMP server to connect to another computer which I've setup and then have that computer relay…
Nexerus
  • 846
3
votes
1 answer

Relay access denied when forwarding email via domain registrar

UPDATE: It turns out that it took several hours for my changes to take effect. So everything's fine now. But I hope this question and answer will be useful for someone. I have a domain name which I've owned for a couple of years, but haven't…
caelia
  • 53
3
votes
1 answer

How to configure a Linux DHCP server when behing a DHCP relay?

Considere the following: How can I configure my DHCP server (isc-dhcp-server package on ubuntu) to feed addresses for 172.16.0.0/18 subnet as it does not has any interface in that subnet? I tried to configure a loopback inside that range to trick…
Nakrule
  • 131
3
votes
2 answers

D-Link DGS-1210 DHCP Relay Option 82

I'm having problems with DHCP relay (option 82) on a DGS-1210-10 switch. The configuration is: Port 1-8 is untagged VLAN 80 (this is also PVID) Port 9 and 10 are tagged VLAN 80 and 99 (where 99 is my management VLAN) The switch has a static IP on…
Jeff Merlin
  • 161
2
votes
1 answer

Block and char device over network on linux

It there a generic way to share a block or character device over network? All related questions solved with specific answer like: if you want to share disk between host, use NFS, SMB, iSCSI, or AoE. If you want to share TV tuner or WebCam, stream…
Dankó Dávid
  • 2,009
2
votes
0 answers

How to set up a sendmail relay using HP-UX 11.x

I need to setup and HP-UX 11.23 system as a mail relay to collect mail from other internal HP-UX servers and relay them to the MS Excahnge operated smtp relay for delivering internet bound mail to the outsid world. In the past, all my servers had…
Scott
  • 31
2
votes
2 answers

Does Tor need more Relay node or Exit nodes?

If I have free bandwidth, am I better off sharing as a relay node or exit node? Trying to help the Tor network
Shamoon
  • 277
2
votes
2 answers

Setting up a SMTP relay that goes back and forth

I have a Postfix SMTP server running at home which can't send or receive mails because of an ISP restriction. (no incoming port 25, nor outgoing) I have a VPS with a public IP that I want to use to relay my home mails to the internet. It should go…
cyllos
  • 21
2
votes
0 answers

Can the DHCP relay agent use the DHCP offer IP's subnet to shrink switch flood domain?

I was wondering whether once the DHCP offer made by the DHCP server arrives at the DHCP relay agent, the relay agent is able to (assuming the network has one VLAN per subnet): examine the DHCP payload for the offer IP and determine what subnet the…
Lewis Kelsey
  • 590
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