0
votes
0answers
28 views

Mail server in the middle responsible for translating from one domain to another

The title is a little confusing. We have an internal mail server that can be used to send mail. This internal mail server is only accessible from within our firewall unless we use the mail server's ...
0
votes
2answers
261 views

Email not being relayed from EC2 Amazon Linux Instance

I'm trying to send email from my EC2 instance. Regardless of the target email address the SMTP service logs show that the email is sent but it never turns up on the remote server. I've done a ...
1
vote
2answers
938 views

POSTFIX main.cf permission denied

I am trying to set up a postfix server for smtp relay. Centos 5.5 I have followed http://mhawthorne.net/posts/postfix-configuring-gmail-as-relay.html but am getting a FAILED error when trying to ...
1
vote
2answers
128 views

Postifx: how can someone send e-mail without authorization with this configuration?

Yesterday I found that 10 thousand e-mail messages were sent through my system using this configuration: http://pastebin.com/bThpH1s8 - main.cf http://pastebin.com/kkxxsstP - master.cf I temporarily ...
2
votes
1answer
111 views

Postfix as a relay for specific networks only

I have a strange issue with postfix that is driving me a little up the wall as it seems to work 50% of the time but with no changes made. What I want to achieve: I have a number of virtual servers ...
0
votes
2answers
432 views

PHP Mail Relay via Remote smtp Server [duplicate]

Possible Duplicate: How to configure php.ini with remote SMTP? We have a php application running on Linux which sends emails to there users. Currently its setup like php.ini is configured ...
0
votes
1answer
283 views

postfix specify limited relay domain while allowing sasl-auth relay

I'm trying to set up postfix to allow relaying under a limited set of conditions: The destination domain is one of a pre-defined list -or- The client successfully logs in Here's the relevant bits ...
-2
votes
2answers
266 views

SMTP server on debian 6.0 linux

I have some questions: I am using a SMTP service for sending monthly newsletter for my website (~3000 email addresses). I was thinking: I already own a virtual server configured as a web server and ...
2
votes
1answer
455 views

Nginx Ubuntu Postfix Config - Can't connect to incoming IMAP server 'server not responding' but can send mail via outgoing using same details?

I'm pretty to new server admin and especially nginx but seem to be getting ok fine apart from accessing my mail via my iPhone? I've changed my domain to 'domain.com' The thing is I can send mail ...
-1
votes
1answer
301 views

Postfix “Relay access deined” error with Outlook

I am following this tutorial and finished the basic setup. I can login and send via squirrel mail and telnet but receive a "relay access denied" error in the logs when i try and send from Outlook. all ...
0
votes
2answers
376 views

How to send email from non-TLS enabled client through TLS-only Gmail account

I need to be able to send email from a client (an OKI document scanner) which is non-TLS capable. But my company's email service is provided by Gmail-Google Apps, which is configured to force TLS ...
1
vote
1answer
878 views

detect malicious script used to send mail

i was recently used as an open relay and mass spam was sent through my server. i since then stopped it but my maillogs grow enourmously with this type of log. Aug 20 07:00:29 veepiz ...
-1
votes
1answer
207 views

Is it safe to make ssmtp SUID root?

I'm using ssmtp, and I would like to not make my /etc/ssmtp/ssmtp.conf world-readable, because it has my gateway password in cleartext. But if it is mode 600, then ssmtp run as an unprivileged user ...
2
votes
2answers
531 views

Has this server been compromised?

A friend is running a VPS (CentOS) His business partner was the sysadmin but has left him high and dry to look after the system. So, I've been asked to help out in fixing an apparent spam problem. ...
0
votes
1answer
288 views

Protecting server from smtp auth relay attack

Server configuration OS Centos 5.xx SMTP exim / dovecot I would like to know how to protect my server from smtp relay attacks. Currently my server is experiencing smtp relay attack because of ...
1
vote
2answers
174 views

SMTP Relay to capture attachments

Does anyone know of FOSS solutions (or general information) on setting up a Linux-bases SMTP mail relay that can do the following: Detect if a message has an attachment if so, save the attachment to ...
1
vote
1answer
589 views

Sendmail: Have to add NAT IP to access list to relay, why?

I have sendmail set up with smarthost to Google Apps (using AuthInfo in /etc/mail/access for authentication). I noticed last night that e-mail was not going through. I send an e-mail like so: echo ...
2
votes
4answers
1k views

Send emails from Linux via Google SMTP

I've gone as far as I can go on my own, but I'm not a Linux guru and am now stuck. I've got an Oracle database running Oracle Enterprise Linux 5.1 on an Amazon EC2 instance. I migrated it from a box ...
1
vote
2answers
478 views

mail relay for multiple domains

Is it possible to configure a postfix (or any other mailprogram for linux) in this way that it is able to recieves/send mails from and to multiple internet mailserver and deliver those mails to local ...
0
votes
1answer
1k views

How to set up my own computer to be an smtp relay only on my private network?

we have mac os x server which isn't connected to the internet, but it's hosting some collaborative tools which is used internaly only (lan). Some of those tools send notifications, but our mail ...
0
votes
3answers
5k views

sendmail relay status

I have a RHEL3 server with sendmail configured to relay mail to: # "Smart" relay host (may be null) DSmailrelay This relay server is an exchange server not administered by me. A few days ago its IP ...
2
votes
4answers
3k views

Postfix - sending emails to external domains?

I want to redirect my system mail to my gmail account, and I've setup postfix on an ubuntu server in an attempt to do so. However, when I telnet to 25 and send emails, the emails just appear to queue, ...
17
votes
5answers
133k views

How to correct Postfix' 'Relay Access Denied'?

This morning, in order to correct a problem with a name mismatch in the security certificate, I followed the recommended steps from How to fix mail server SSL?, but now, when attempting to send an ...