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0answers
8 views

mailman refused relaying after update

After I updated my mailman installation the server is now refusing to send the messages... and I can not figure out why. (I receive the messages since my mail account is on the same server, but they ...
0
votes
1answer
40 views

What is the best way to redirect a user to another server and domain and keeping the URL intact?

I suddenly have a client who doesn't understand much in programming. So the best solution in this case would be - to run the app on my server while keeping his domain under his control. He has there ...
0
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1answer
42 views

Postfix reply to emails addressed to external email while keeping the correct from address

I have a mail server all set up and running on ubuntu 14.04 with Postfix / Dovecot for the domain "postfixserver.com". A second domain "googleapps.com" is running on google apps. user@googleapps.com ...
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2answers
70 views

Postfix 5.7.1 Relay access denied

I know there's a lot of similar questions here but none has helped me. So I have a Debian 7.0 server with postfix and dovecot working on it with a self-signed certificate. I can send emails to other ...
0
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1answer
35 views

Using AirPort DHCP relay agent info to assign IP by policy from server 2012

We have recently setup a Windows server 2012 DHCP server, with one scope of 10.0.0.0/16 We have a couple of policies in place to make sure certain ranges are assigned to certain devices, e.g. Thin ...
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0answers
33 views

How to Relay All HTTP Requests to Another Server

Here is the scenario I need to work with. We have devices which need to talk to web service. This web service is hosted elsewhere and is accessible via DynDNS. Due to limitations on the device and our ...
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1answer
51 views

Postfix to Postfix relaying

I've got a (possibly unusual) situation with using Postfix to relay mail to another Postfix mail server that then needs to send the email out. I've read plenty of tutorials and seen instructions for ...
0
votes
1answer
92 views

Postfix illegal address syntax

My postfix install is set up to forward all email going to example.com to my other mail server at mail.example.net. This works fine for all addresses except !@example.com -- the example.com server ...
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1answer
73 views

Existing TCP Relay Solutions [closed]

I have a scenario which requires the use of a TCP Relay. Before I set out to write something custom, I wanted to see if anyone knows of existing software that can do this for me. I have 2 devices on ...
0
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1answer
98 views

Postfix relay for gmail sending as root

I've configured postfix to relay gmail (google apps) but the emails are sending as root@mydomain instead of admin@mydomain as (I believe) I've configured. I think the config is ok because I'm not ...
0
votes
1answer
26 views

Default Relayhost and custom relayhost for domains [closed]

I have a customer which needs a custom relayhost for sending emails. So I want to choose this relayhost only for this domain. customer.example.com -> relayhost A (all other domains) -> relayhost B ...
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votes
2answers
1k views

“Relay access denied” when sending email via php mail in zpanel

I have installed zpanel on my centos server i am using php mail function to send signup email to my clients. it was working fine on my virtualmin server but when i moved my site to zpanel server it is ...
3
votes
1answer
3k views

Postfix: Recipient address rejected: User unknown in local recipient table, even though recipient domain is an external domain

In my company infrastructure, I have an internal mail server with postfix whose name is, say, srv-internal.central.mydomain.tld with internal IP 10.10.128.200. For exchanging mails with the Net, it ...
0
votes
1answer
219 views

Using SMTP Relay on a Exim Server in VPS for Multiple Domains

I am moving my email behind a dynamic IP, and I will need to SMTP relay outbound email in order to avoid spam lists. My domain is hosted through a BlueHost VPS running EXIM. I am wondering what I ...
0
votes
1answer
51 views

Postfix relaying to local instead of relayhost

I am trying a simple postfix relay of emails via an SMTP server. But I see from the logs that the mails are relayed to local and not to the relay host. The main.cf configurations are below, ...
0
votes
1answer
143 views

Postfix a lot of relay acces denied errors in maillog

I'm on Centos 6.5 with Postfix/Dovecot and some virtual domains. Postfix works fine, but I've got a lot of messages like this "NOQUEUE: reject: RCPT from 1-160-127-12.dynamic.hinet.net[1.160.127.12]: ...
2
votes
3answers
273 views

DHCP Relay vs Multi-Homed DHCP Server

I'm sketching out a new network topology and I'm unsure of how to solve the issue of DHCP between two VLANs. 10.50.2.0/23 will hold the majority of our users, corporate wifi, printers etc. ...
2
votes
1answer
431 views

postfix transport relay access denied

When message arrives from other mail server (yahoo/gmail) on my postfix server it gets denied and not being transported using the transport on my configuration. Been checking whole day can't find ...
0
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0answers
46 views

Need to setup an intermediary to accept, alter and resend a UDP packet

Currently ApplicationA on ServerA sends a UDP packet to ApplicationZ on ServerZ several times throughout the day based on several triggers. The problem is that some of the data in that packet is sent ...
0
votes
1answer
35 views

How to use services secured by our gateway IP from clients outside our network?

I work for an organization that uses a managed host for App1 and a collection of apps, App2..N App1 is a web application, hosted on a linux webfarm by a large vendor - and it uses a forms-like ...
1
vote
2answers
182 views

stop postfix relay from internal network

I'm using Postfix 2.7.1 (can't change to a newer version for the moment) and it's running fine, with the exception that is allowing to relay mail from the internal network even if the specified sender ...
1
vote
2answers
2k views

Sendmail: Mails are still being relayed to root@localhost

I am running CENTOS 6.2 with 2 virtual machines one 'auth'(192.168.0.2) and another proxy (192.168.0.3). Proxy has no internet connection. My intention is for proxy to send its mail to auth and auth ...
0
votes
1answer
550 views

Using sendmail to forward to one sendmail server and sending mail from that server

I am using linux with centos 6.2 distribution. I have 2 VM running these distributions. One VM is named 'proxy' and the other 'auth'. Have sendmail installed on both. Proxy does not have an ...
2
votes
1answer
2k views

Zimbra MTA settings

Hi have some questions for Zimbra v8.0.6GA. Under Configure -> MTA -> Network, I'm seeing a few settings and am not very clear what to do with them. Web mail MTA Host name Is this for delivering ...
0
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1answer
758 views

Postfix relay mails from a single domain and IP

we have an Mdaemon server which redirects outbound mails to an external basic Postfix relayer. We have configured firewall rules (in front of postfix server) to accept smtp requests only from the ...
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votes
1answer
355 views

How to configure sendmail to use different SMTP relay servers [closed]

How to configure sendmail to use different SMTP relay servers. For example: For all gmail.com recipients sendmail should use gmail SMTP server obviously with Gmail smtp auth. For all yahoo.com ...
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1answer
1k views

Postfix not accepting relay from localhost

Postfix does not seem to want to accept relay from the local machine, despite mynetworks_style=host. Here's (trimmed) mail.log output from debug_peer_list: postfix/smtpd[23247]: resolve_clnt: `' ...
1
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2answers
423 views

Postfix: Transport Maps via Third-Party Relay Host

I have my website and email hosted with a shared host. Unfortunately their servers are using CPanel, so they are limited in their spam protection options. I also have a VPS that I use for testing ...
-1
votes
1answer
120 views

Trouble configuring sendmail to relay mail [duplicate]

I am trying to configure sendmail and ufw on an ubuntu server (ServerA) so that another server (ServerB) can send mail through it. In my /etc/mail/access file I have the following line (a.b.c.d is the ...
1
vote
2answers
132 views

Two servers, one is a Postfix relay of the other, can I divert root emails from the other?

So, I have two servers, I will call then Internal and External. When I send emails within Internal postfix, it gets relayed by External which does the job of actually sending the email. Normal relay, ...
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0answers
76 views

Own relay server using VPN

I have following setup: Server (NATed) connected via VPN to public relay server. There are many of these servers and all have an own VPN connection to the relay server. A client (mobile, NATed) sends ...
0
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1answer
697 views

554 5.7.1 Relay access denied iredmail

I have the feeling the answer to this may be obvious but my head is pickled with this. setting up a mail thing on ubuntu 13.04 with postfix,iredmail,mysql and that. Getting this in the logs when I try ...
1
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1answer
83 views

How can I relay mail to multiple SMTP servers?

We want to use Google Apps for Domains as our email service but the "corporate" office want's the emails in Exchange. I would like to set up a relay (is that the proper term) to send any incoming ...
0
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0answers
96 views

Netcat relay issues

I have a legacy database application that can be accessed via ODBC on port 3000. I have set up a simple netcat relay on a bastion host so that this ODBC access can be done via the bastion host: ...
1
vote
1answer
216 views

Relay HTTP request through other servers and back

I have 6 Ubuntu cloud servers, which of one acts as a main Django deployment with an intranet and cronjobs. For the cronjobs I request data from different data-sources, that I want to go through the ...
1
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2answers
320 views

Grant relay to servers based on AD security group membership

We're moving our relay from an Exchange 2003 server to an Exchange 2010 server. I was hoping the "Grant or deny relay permissions to specific users or groups" option would still be available in some ...
0
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1answer
189 views

“Wrong” from name when sending mail through (smtp) Exchange 2003 from RT/Debian internally, ok externally

I think this is really simple to solve but I just need some input to get my brain working again. Followed this guide to set up RT on Debian: http://burn.co.nz/blog/?p=54 To explain the issue plain ...
1
vote
1answer
270 views

Redundant mailservers. Route messages from internal users to secondary site

I have 2 mailservers running ZIMBRA (primary - site1) and (secondary - site2) in two separated locations (sites). When my primary mailserver in AVAILABLE the seconray are just syncing (rsync) with ...
3
votes
2answers
438 views

Intermediate SMTP server (exim), how to handle backscatter?

I have a dedicated Ubuntu Lucid box at a hosting provider that is my backup MX (running exim4 4.71-3ubuntu1.4) for domains that I have configured on an Exchange 2007 server on my LAN. So my Exim ...
0
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1answer
989 views

sm-mta strange outgoing messages

I noticed something weird today on my mail server. I had a message in my inbox that said: Received: from myserver.com (localhost) by myserver.com (8.14.3/8.14.3/Debian-9.2ubuntu1) id ...
0
votes
1answer
105 views

can Dovecot be used for relaying mail for user like a gateway?

I want to setup a gateway mailserver for relaying intranet users' incoming and outgoing email. I've setup postfix for relaying mail, but I dont know if dovecot can do this. e.g. Dovecot as gateway, ...
0
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2answers
384 views

postfix bounce configuration

What I have is: Windows server generating emails with own app and sending them to relay server (2) - this works fine Relay server that sends emails received from (1) - CentOS - working fine What I ...
0
votes
1answer
190 views

Apache Module to hold connections | backend to DMZ - DMZ to backend

I'm looking for an Apache module or plugin which offers me the following functionality. I have an Architecture which includes the following components: Internet: mobile device External Firewall ...
0
votes
1answer
686 views

Postfix: Relay access denied through SASL with permit_sasl_authenticated setted

Postfix 2.7 / Ubuntu 10.04 LTS when i try to send a mail from Outlook (with smtp auth) to a gmail account (or others), i get relay access denied. The log (i've faked the emails): Feb 24 16:49:16 ...
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votes
2answers
392 views

How to catch or filter specific sender or recipient

I have a bit of problem and I am pretty new in this field and I don't know how to set this. I have searched somewhere on the internet how to solve this but I don't really get all this stuff about ...
0
votes
1answer
348 views

How to have Postfix send email to another server if user lookup fails for specific domains

Currently my server acts as a gateway, checks AD for valid email addresses, if the email address exists in exchange it sends over the email, otherwise just rejects (typical) I need Postfix to send ...
2
votes
1answer
1k views

Exim Prevent Mail Sent by Relay

Currently it appears that somehow someone is using my server to send spam as I'm seeing 100's of rejection emails from other email services (such as gmail) saying the message could not be delivered ...
2
votes
1answer
832 views

Relay Access Denied (State 13) Postfix + Dovecot + Mysql

So we have been scratching our heads for quite some time over this relay issue that has presented itself since we re-built our mail-server after a failed Webmin update. We are running Debian Karmic ...
2
votes
2answers
729 views

How to configure postfix to permit relaying from some ip address but only using one domain as sender

I was looking for this but I can't find any thing. I want to permit one ip address to relay mails by my servers but only using one domain as sender. Can I ? If yes, how. I use postfix 2.9.4. Sorry my ...
0
votes
3answers
1k views

Postfix : relay access denied

Since I can't find a solution that works with my config, I lean on you guys to help me out with this. I've installed postfix and dovecot on a CentOS server. Everything's running well. But when I try ...