Exim Outbound Relay Per Domain
May 4, 2008
I have been searching for a solution to a problem that shouldn't exist but it does.
Background:
I have a customer on a UK server who sends emails to 500+ recipients on a monthly basis, and all but 3 emails are delivered....
The 3 that don't go, bounce after 3 days (as per the exim setup)
The 3 recipient domain's that reject don't seem to accept email from UK/European ip's and I have tried to send them emails from 4 different networks and still they bounce.
I have even tried to contact them via gmail, and still not heard back.
Proposed solution:
I want to be able to send email for that 1 domain to a Postfix Relay I have in the US.
Question:
How do I achieve this within Exim (a Cpanel Server).
I have found that so far its to do with the Router Configuration section within the Cpanel Exim setup, but I cannot seem to find an example of what and where i need to change the config...
Can anyone provide an example?
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Dec 15, 2006
I've been reading, and it seems that I have to use ACL. But, how do I setup a proper ACL to keep my server from being an open relay?
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Dec 3, 2008
Exim server - being used to relay spam?
Hoping someone can help here. I have a web server running a couple of sites, has been for a couple of years now. With one of the domains, I have an email forwarder setup through cpanel to forward mail sent to a specific address at that domain to my gmail account (it's a "contact us" type address). I don't think the email address is listed on the web anywhere.
Anyway, I am noticing a lot of spam emails being sent to that address, from that same address and they all appear to be relayed through my exim server legitimately. Obviously they aren't (as I am not sending them).
I am only familiar with sendmail, and am unsure about where to look for any possible hacks to my exim server. Can someone point me in the right direction? I want to stop these spam messages being sent, asap.
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Jan 14, 2007
to change ip for smtp relay. I need to use a separate ip to send all the emails from my server.
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Dec 3, 2007
One of my clients has 2 accounts:
- foo.com, with a mail account info@foo.com.
- bar.com, with domain forwarding to foo.com.
Sending an email message to info@foo.com works.
Sending an email message to info@bar.com doesn't work. When using the ZoneEdit SMTP test utility I get the following error message:
Code:
> RCPT TO:<info@bar.com>
< 550 5.1.1 User unknown: info@bar.com
I checked "/etc/vdomainaliases/bar.com" and "/etc/localdomains", they are configured properly.
Any suggestions?
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Jul 28, 2009
I have two servers running cPanel/WHM, with BIND and Exim. I have my main domain running on one server (gizmo.mywebhost.net) and wish to host a seperate helpdesk on a subdomain support.mydomain.com (on a second server, stripe.mywebhost.net).
The subdomain mail account test@support.mydomain.com works fine with hotmail, i can send and reveive between my stripe.mywebhost.net server and hotmail without any issue.
The problem is when i try and send mails from accounts hosted on gizmo.mywebhost.net, to the subdomain server stripe.mywebhost.net, i get the following unroutable address error fired back by the local exim process:
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:
test@support.mydomain.com
Unrouteable address
------ This is a copy of the message, including all the headers. ------
......
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Mar 29, 2007
Can we disable sender verificaiton for a specific domain in exim? If so, can you tell me the steps?
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Apr 2, 2007
I have Exim install on my server, I have a few filters setup.
I have several domains on the same server.
What I want to be able to do is blind copy all emails SENT and RECEIVED from *@domain1.com delivered to backup@backup.com
Here is my filter that copies all incoming mail, (THIS WORKS 100%)
PHP Code:
if error_message then finish endif
if $header_to: contains "@domain1.com"
then unseen deliver "backup@backup.com" endif
Now this filter does NOT work, I want it to blind copy all emails sent from *@domain1.com
PHP Code:
if $sender_address contains "@domain1.com"
then unseen deliver "backup@backup.com" endif
I have 1 outgoing mail filer working, however it is for a specific email address, here it is....
PHP Code:
if $sender_address is "user1@domain1.com"
then unseen deliver "backup@backup.com" endif
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Jul 20, 2009
A prospect wants an email server that could allow him to restrict some accounts and make them send emails only to the companies domain.
I was thinking of setting up a VPS with smartermail, so I was wondering if this be done with smartermail?
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Mar 29, 2009
Could you guys look and see if what I am seeing is right? They offer Global Crossing and Cogent officially. So if I use GLBX looking glass, I get this.
Trying trace from node 'Miami, FL, US' to '96.31.73.xxx'
1 64.214.16.65 (64.214.16.65) 0.761 ms 0.608 ms
2 so0-0-0-2488M.ar2.TPA1.gblx.net (67.17.66.165) 5.690 ms 5.695 ms
3 WBS-CONNECT-LLC.ae0.409.ar2.TPA1.gblx.net (64.214.147.222) 5.731 ms 5.880 ms
4 69.46.31.106 (69.46.31.106) 7.442 ms 6.667 ms
5 node1.sarorahosting.com (96.31.73.2) 15.734 ms 15.993 ms
6 96.31.73.xxx (96.31.73.xxx) 15.861 ms 15.795 ms
Now if I tracert from the VPS to the GLBX router, I get this.
traceroute to 64.214.16.65 (64.214.16.65), 30 hops max, 40 byte packets
1 node1.sarorahosting.com (96.31.73.2) 0.072 ms 0.035 ms 0.008 ms
2 69.46.31.105 (69.46.31.105) 0.731 ms 0.863 ms 1.003 ms
3 gi0-6.na21.b001841-0.tpa01.atlas.cogentco.com (38.99.204.33) 1.147 ms 1.142 ms 1.428 ms
4 gi4-1.core01.tpa01.atlas.cogentco.com (38.20.33.89) 0.818 ms 0.814 ms 0.807 ms
5 po2-0.core01.mco01.atlas.cogentco.com (154.54.27.90) 148.004 ms * *
6 po5-0.core01.jax01.atlas.cogentco.com (66.28.4.146) 5.847 ms 5.839 ms 5.872 ms
7 po5-0.core01.atl01.atlas.cogentco.com (154.54.3.197) 11.953 ms 23.819 ms 23.870 ms
8 te3-3.ccr01.atl01.atlas.cogentco.com (154.54.5.38) 11.721 ms 11.752 ms 11.787 ms
9 te8-2.mpd01.atl04.atlas.cogentco.com (154.54.3.174) 11.962 ms 11.921 ms 11.987 ms
10 ge4-1-0-390-1000M.ar4.ATL1.gblx.net (64.208.110.97) 12.252 ms 12.359 ms 12.444 ms
11 64.214.16.65 (64.214.16.65) 16.026 ms 16.061 ms 16.594 ms
Now what would be causing this to happen?
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Mar 24, 2009
I have an interesting situation on my CentOS 4 server. I have a number of virtual adapters (e.g. eth0:1, eth0:2 etc), and for some reason all outbound traffic is going through one of these, not eth0. If I go to ipchicken.com, it shows the ipaddress of a virtual adapter, not the normal eth0 adapter.
I have been looking around for information on how to set the default adapter to eth0, but I can't seem to find anything. I can't reboot yet, as it's a production server, so I have to wait for 'scheduled maintenance'. If that's the solution, I can try it, but I am sure there is another underlying issue/routine here.
Is there a way, while live, to set the outbound adapter back to eth0?
Please note, that I have only just realized this has happened. In fact, it has been this way since November. I can tell because server name stamps on Email messages sent from this server indicate a virtual domain at that IP address. I recall I had done some work around that time, which had involved me ifup'ing and ifdown'ing some of these adapters (but not eth0, or the eth0:100 adapter (if I recall correctly) that is now the default).
Also note that I have groups of eth0 adapters, such like:
eth0:1
eth0:2
eth0:3
eth0:100
eth0:101
eth0:102
It's the eth0:100 adapter that is now the default.
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Jun 20, 2007
What is the command I need to issue to block an IP address from my server? I need to block both inbound and outbound access.
I need the rule to append to existing rules so if the server is rebooted the rule will still be in effect.
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Oct 14, 2014
We have an AWS plesk instance with around 400 domains on. All domains DNS are pointing mail to a different server and almost all domains have a contact form on their website.
the problem is, the contact forms won't work as mail is on a different server. I'm assuming that the local server thinks mail is on the server and thinks it has already been received?
is this because we need to disable incoming mail for all of these domains? if so how would we go about doing this? I tried stopping all courier-imap services but this didn't seem to work.
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Nov 14, 2006
I need to setup forwarding of a copy of all outbound smtp emails from clients domain (setup on CentOS/cPanel) to their backup gmail / pop account...
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Nov 6, 2008
My datacenter has told me about my server sending high amount of outbound bandwidth from my server:
During the attack time my email logs, I found several messages:
cpdavd failed @ Thu Nov 6 12:21:18 2008. A restart was attempted
automagically.
Question #1. How can I check which user is using cpdavd (connect from their PC to the home folder)
I suspect someone is connecting their PC to my server and uses very high bandwidth!
The datacenter says the attack is still going on when they plug in the server.
Question #2. How can I check what is sending outgoing traffic on the server right now?
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May 18, 2008
I am moving into the world of dedicated servers (from VPS). I just got a server from Serveraday.com /OLM.net.
When I was doing bandwidth tests, I found the server's inbound speed was much slower than outbound. I tried downloading a bunch of different provider's 10MB test files from the command line of my server using wget. They were all around 20-30 Kbps.
When I take those same 10MB files and serve them from my dedicated box, the results are much different. My server can push the files out at over 1Mbps.
Why would my server be set up this way, and is this normal behaviour? I sent a ticket to OLM, but their support seems to take a long time. So I figured I would bounce the question off of all you here on WHT
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Nov 7, 2008
It appears Comcast is now blocking port 25. As a result, I can't sent outbound email via my dedicated server. They had me change to port 587 for my comast email account, but that doesn't solve my not being able to send outbound from my dedicated server.
Is there anythighn I can do (like change the post my mail server uses to 587) so that I can send outbound mail from my server with outlook (over Comcast connection) or am I just stuck now with using web mail?
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Mar 6, 2008
i have installed a new mail server i.e. SmarterMail, and from past few days i have devoted much time to find "How to create Out Bound rules in Smarter Mail?" but unfortunately i ended up with no solution, hence here i am seeking help from all the member of WHT for my two questions:
1) Can we create an out bound rule in smartermail?
2)if yes, then what is the process for same?
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Apr 18, 2008
any good solution for corporates out there?
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Feb 16, 2007
I'm using the free edition of MailEnable and need to configure each post office to copy all incoming and outgoing email to one of the email accounts on the same post office.
Is there a way to configure this ?
I know I can configure mail forwarding on incoming mail per account but need to do it for all acounts (except the audit account).
e.g. anythinghere@dbnetsolutions.co.uk
incoming or outgoing would be copied to audit@dbnetsolutions.co.uk
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Jan 31, 2008
I'm not sure if this is the right place to be posting this, but at our hotel, we have wireless routers (Linksys) that any of our clients can use to connect their laptops to the internet. We have been getting reports from our ISP that spam has been coming from our external IP address, so I wanted to know what people would recommend as ways to combat either our computers or any of our clients' computers from sending out spam. The internet is connected through a firewall/server computer running linux. I thought about blocking port 25, but I'm sure we would have clients complaining about not being able to send any mail.
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Jul 9, 2007
I tried a little searching both in Google and on here but this is probably going to be a private or member-based thing anyway.
I've gotten a couple comments that some of my outbound personal mail is ending up in spam folders. I think it's almost completely limited to having Outlook (or Express?) as a client... which I assume doesn't even do network-based lookups. Nonetheless I don't seem to be on any blacklists, and running it through my own spamassassin filter comes up basically zero score. But the fact that more than one person has had the problem concerns me greatly. Also, I haven't seen any significant reason why the content itself would trigger anything.
I realize a public spam test service would basically be a "testing ground" for spammers to evade detection, but there's obviously legitimate uses as well... is there such a tool somewhere? Thanks for any advice. Public information sharing is key to a forum, but PMs are welcome in this case.
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