The smtp-relay tag has no wiki summary.
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Proper configuration for Windows SMTP Virtual Server to only send email from localhost, and tracking down source of spam emails
We manage a server that is hosted on Amazon EC2, which has web applications that need to be able to send outgoing email. Recently we received a notice from Amazon about possible email abuse on that ...
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36 views
When is a mail relay needed?
Let me expand...
I have a client who is unhappy with their current hosting situation. They want me to move their website and domain across to my hosting platform. I can do this.
However I have ...
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43 views
Sending mail in localhost:25 with Ssmtp
I already have Ssmtp installed and working in a Centos 5.7 machine with Gmail configured.
I can send mails in th shell without problems.
Now i want to use the ssmtp to allow a web app (installed in ...
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1answer
37 views
Is there are postfix setting to disable prepending a sender path in the Received: header?
Currenty emails are sent/received as :
Received: from localhost.localdomain (sender.host [xx.xx.xx.xx])
by smtp.host (Postfix) with ESMTP id 7F6CC67897
for <mail@example.com>; Thu, 19 ...
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1answer
33 views
Postfix connects to wrong relay?
I am trying to set up postfix on my ubuntu server in order to send emails via my isp's smtp server. I seem to have missed something because the mail.log tells me:
Jan 19 11:23:11 mediaserver ...
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2answers
90 views
SMTP server currently an open relay
I'm using Postfix (2.3.3) on CentOS (5.7). Right now, my server seems to be acting like an open relay. If I specify a login, it works fine, both unsecured and with TLS (however TLS nags me about the ...
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1answer
110 views
SMTP delivery with multiple recipients
I'm going over some SMTP log files from an open relay server (IIS 6 SMTP Virtual Server), used to collect and route all automated email within a private network, to an internet smarthost (qmail at ...
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1answer
30 views
Qmail with AUTH CRAM-MD5
My Qmail install on Centos5 has CRAM-MD5 installed.
I want to use this to an authenticated SMTP relay.
Where do I specify the username and password details for QMail?
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1answer
44 views
relay mail from one postfix server to another
I'm attempting to use just 1 postfix instance to input ALL my outgoing mail. From there the goal is to relay it to my one of the many outbound postfix instances. I do this using round robin dns so it ...
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1answer
129 views
How to solve authentication error in sendmail relay through gmail [closed]
I followed the steps in http://www.linuxha.com/other/sendmail/gmail.html to setup gmail in send mail. But when I try to send mail I got the authentication failure message.
—– Transcript of session ...
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3answers
112 views
How to get Postfix to send/forward/relay to a sub-domain located on another server?
I have a quick question. How do I setup postfix to send an email to another server (Exchange Server) when sending to an email address that has a sub-domain of our main server. For example, say our ...
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1answer
106 views
How to set exim4 to send email anywhere but only from authorised users?
Struggling to get my head around the various relaying controls in the exim4 config.
I can send email from my server, I can send email from home and work (because I explicitly added suitable netblocks ...
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1answer
158 views
What is the proper time delay between sending emails for smtp to not fail on windows server 2008 r2 [closed]
What is the proper time delay between sending emails for SMTP to not fail on Windows Server 2008 R2 machines?
For example, if I set a 500ms delay, would it successfully send all emails?
My software ...
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1answer
99 views
Exchange 2007 relay from sendmail, message “Undelivered”. Possible reasons?
Note: This is my re-post from Stackoverflow.
I've been messing with a test environment for security purposes where a DMZ RHEL5 sendmail server is used as a relay for an Exchange 2007 server. ...
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2answers
108 views
How can email be resent that has been delivered to the Badmail folder in IIS?
We have IIS setup as an SMTP relay. A relay security error caused the outbound emails to be delivered to the badmail folder for the IIS SMTP Service.
Is there any standard method for attempting to ...
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2answers
169 views
A flexible SMTP server that's open source or free
We currently have our own in-house email marketing software for our newsletters, and were using SQL server's SMTP agent to send emails through our local SMTP server (IIS) and then onto our ISP's SMTP ...
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1answer
141 views
Preventing email blasts with Exchange 2010 IP Throttling (or any other technology)
We need to slow down the rate email spam is sent through the Exchange system from our developers' buggy applications.
How can I throttle email messages in Exchange 2010 by Source IP, or sender, so ...
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3answers
549 views
Google Apps as SMTP relay?
We have linked the domain of our company to Google Apps and we also have a Kerio Connect (mail server) installed in our company which uses Google as SMTP relay. As google requires SMTP authentication ...
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1answer
119 views
How can I configure Postfix to ignore relayhost for some domains?
Is there a way in Postfix to ignore the relayhost?
I have something like
relayhost = [smtp.domain.net]:587
Now for a certain domain I don't want to send it out to that relay but want it to just ...
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2answers
157 views
Sendmail relay authentication
I'm trying to set up my sendmail to authenticate against a relay (comcast). I'm not seeing any attempts to authenticate at all. I'm trying to just debug how authentication works, and can't connect all ...
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1answer
85 views
Mailx not sending emails
Using
CentOS 5.6 and trying to send (only) emails to remote boxes. I am on a CentOS client box and
trying to send email to my road-runner email account.
mailx -s "Some Subject" me@tx.rr.com < ...
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0answers
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IIS 6.0 and Virtual SMTP relay ~ some messages are bouncing
I will give a quick overview and then the details.
I have a Exchange 2003 environment that I have been asked to slap on a disclaimer on all outgoing mail. So I have setup a Windows 2003 server and ...
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1answer
96 views
550 Relay Denied in Xmail
I am running Xmail server in Windows 2003. When I took SMTP test at MxToolBox.com I am getting an error as 550 Relay Denied. How to fix this error?
SMTPrelay.tab file contains the following.
...
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1answer
173 views
Set up SMTP server to add global signature to all emails from Google Apps for Business
We are using Google Apps for Business for our mail server, but require a global signature (simple HTML) to be appended to every message sent. This is not a feature of Google Apps, although it is ...
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2answers
138 views
DNS, SMTP Problem. Trying to send emails through PHP scripts using Gmail server
I have purchased a dedicated server some days ago and I think I don't have enough knowledge to configure its DNS etc. Well, I'll describe my situation.
I have a dedicated server for virtualization, ...
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2answers
77 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 ...
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1answer
275 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 ...
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1answer
76 views
Need help diagnosing “User unknown in virtual alias table”
I'm using virtual alias maps to relay mail and I keep having some of the entries bounce. Postfix seems to know where they are supposed to go and when I run postmap -q for virtual_alias_maps and ...
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2answers
150 views
exim4 to relay emails
I have exim4 installed on a Linux box. The basics work fine and I can send email from that machine without any problem to whatever email address.
I also have a printer/scanner which is capable to ...
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1answer
68 views
Use sendmail as client for relaying mail
I'm trying to use an account on my central mail server to send all mails from other boxes. My central mailserver is itracknetworks.ca and I have an account there at testuser@itracknetworks.ca. I ...
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3answers
103 views
Network Hardware supports SMTP, but no AUTH information… Need to Send emails through SMTP with AUTH
I have a network device that supports sending email notifications, but doesn't provide for the username and password. I would like to point this device to an internal system which would then take care ...
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3answers
167 views
Mail not relaying in postfix
I am managing a server which mainly deals in relaying mail using virtual alias maps. For some reason unknown to me email that goes through these maps are getting bounced. I've checked to make sure the ...
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1answer
90 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 ...
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1answer
71 views
Relay Access Denied with virtual_alias_maps in postfix
My postfix server is encountering a problem with a couple domains bouncing email. The error message is:
postfix/smtpd[2673]: NOQUEUE: reject: RCPT from mail.foo.com[xxx.xxx.xxx.xx]: 554 5.7.1 < ...
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1answer
155 views
Postfix: 5.7.1 Relay access denied
I hope I can become help here with my problem. I can't send E-Mails. I get only the error message: 5.7.1 Relay access denied
my postconf:
append_dot_mydomain = no
biff = no
...
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3answers
171 views
Recommended SMTP Relay Service
I've got a legacy application that needs an smtp server to relay emails. Each client has various control over their IT infrastructures (from little to none at all), so I can't necessarily install an ...
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139 views
Configuring SMTP server with PHP / IIS6 / Joomla
I'm trying to configure PHP, Joomla, IIS6 and Windows Server 2003 to play ball with a new SMTP server that I've been told is replacing our existing setup. I've tried the following:
PHP:
Set php.ini ...
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0answers
99 views
Postfix: relay_recipient_maps only for a subset of relay_domains
I have a setup of several frontend (MX) postfix servers using relay_domains. Some of the relay_domains are hosted on a postfix backend server that has the mailboxes. The other relay_domains are of ...
2
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2answers
211 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. ...
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1answer
86 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
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1answer
92 views
Setting up SMTP to receive mail
Thanks to a post on StackOverflow, I was keen to discover that I can set up SMTP in IIS6 to receive mail on my Windows 2008 server. However, I'm having a bit of difficulty as my test email results in ...
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2answers
459 views
gmail smtp over sendmail
I've setup my sendmail to send mail using Google SMPT. However, I keep getting this error.
Jun 20 11:35:24 server sendmail[2370]: p5KBZO3X002370: from=apache, size=1646, class=0, nrcpts=1, ...
2
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2answers
655 views
Sendmail on Ubuntu trying to use Google Apps servers as a relay, by default?
I have a recently installed Ubuntu (natty) server, with a domain pointed to it. The mail for this domain is handled by Google Apps (via MX dns records pointing to Google's mail servers).
Now, I've ...
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1answer
1k views
IMAP/POP won't send allow emails to outside- New Dell PowerEdge 7310 running SBS 2011
I have a brand new out of the box Dell PowerEdge T310 running SBS 2011. Our employees at our remote offices can't send emails to recipients outside of our own domain. The workstations at the same ...
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1answer
169 views
Prepend X-header to all relayed messages in Postfix
I've got several production servers running a LAMP stack. They each have a local Postfix server catching any mail from the system and from PHP, and relaying it via a smarthost (the SendGrid SMTP ...
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2answers
73 views
E-Mail blocked because of IPs in Trace-Fields (“Received”)
we have an SMTP problem. Our setup is a internal Exchange server and an external mail gateway (exim) with a DNS entry and MX record. This gateway accepts all mail for our domain and accepts relaying ...
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2answers
70 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 ...
2
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1answer
190 views
IIS SMTP Relay to Google Apps adds header to e-mail body
I have an IIS6 SMTP set up to relay e-mail for applications on my intranet that does not support TLS to a Google Apps e-mail account per this tutorial.
For the most part it is working great, but when ...
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2answers
125 views
How can I send email notifications from an app that does not support TLS when my service requires TLS?
We have recently changed the email services. The previous service allowed us to make SMTP connections without TLS. The new service requires TLS.
We have a couple applications that need to send ...
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38 views
How to set up Postfix to use various Google App accounts with different domains
We have a webapp that runs on different domains. We use postfix to relay mail from PHP to Google App. My major issue is that the sender is being overwritten and ends up as the default Google App login ...
