I am using the Postfix SMTP server for sending emails. However I just did a default installation and subsequently someone is sending spam using my SMTP server. I would like some help on securing my Postfix server and to block these mischievous emails being sent from my server.
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I have installed an SMTP server using ...
sudo apt-get install postfix
but I sill cannot send emails from my local machine to my yahoo account using ...
echo "Hi Steve que tal ?" | mail -s "test message" steven_matthews_uk@yahoo.co.uk
I have the following config with Postfix:
Quote:
But it keeps coming up with:
Quote:
Is there any reason from these configs as to why this should be occuring?
This was the guided step by step tutorial I followed: [url]
One of our postfix servers is for sending/receiving internal emails only. When a user entered a wrong recipient address, it will take almost an hour for the user to get the "Recipient address rejected" email. What can be done to let the user get the "Recipient address rejected" email quickier.
View 7 Replies View Relatedi'm not a techie but have tried my best to solve the issue without success. I have a static IP from local ISP and my computer is configured with 192.168.1.2 (LAN IP).
I have installed ubuntu server 9.04 and want to send emails from my server for which I've configured postfix. But I dont know what to do next.
My questions are:
1. Do i need to install DNS server for using postfix? If not, what should I install to send emails from this server?
2. Do I need to forward any particular port in my router?
3. If I dont have a fully qualified domain, what are the configurations I need to do to send emails?
I have a static IP from local ISP and my computer is configured with 192.168.1.2 (LAN IP).
I have installed ubuntu server 9.04 and want to send emails from my server for which I've configured postfix. But I dont know what to do next.
My questions are:
1. Do i need to install DNS server for using postfix? If not, what should I install to send emails from this server?
2. Do I need to forward any particular port in my router?
3. If I dont have a fully qualified domain, what are the configurations I need to do to send emails?
so i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens
View 7 Replies View RelatedI have wordpress installed on my VPS, which is running 10.04.1 LTS. I appear to be having an issue whereby the server isn't sending out emails to new users, nor to myself when I get comments on the blog.I'm at a dead end for where to look next, because the settings are exactly the same as they were with my previous VPS (and they were always pretty generic), but yet it doesn't work.
View 5 Replies View RelatedSomewhere out there there has to be someone that can help me set up my lamp server to send automated emails using my cable providers SMTP server
View 2 Replies View RelatedHas thunderbird (recent version) have a "TEST" function ? basically, i'm trying to send messages, with 20+ accounts (different emails, but one domain / SMTP server). one account works fine - the other one doesn't. i go to my "outgoing server" & everything is fine - usernames / ports etc..) The settings for each account do show the right outgoing server. If i 'send later' & close down thunderbird, 7 re-open - it asks me for my password again (which it saves), & then it is able to send the email.
QUESTION :- is there a TESt option that will test each & EVERY account in one timeslot ? Ie, will go through each email address - sends an email to itself (the same address), & sends it. it will then try the server again, to see if the email was received. & then give me a single report, of all the incorrect settings.(I've tried this 1 email account half a dozen times tonight & i dont know *WHY* its not sending on the 1st go.. )
I'd like to have anything that tries to send mail locally on my machine (including crontab reports for instance) to be handled by my ISP's smtp server instead of my machine acting like it's own SMTP server. I've spent around 15 hours trying to figure out how to do this and I keep either getting into things that I don't understand, or hitting brick walls (for instance, I found nullmailer, but after installing it, it seemed like it would only work on Unix) Is there an application like nullmailer which I can use as my MTA to forward all internal mail to a different SMTP?
View 3 Replies View Relatedi had configured mail server in linux. i had configured sendmail in linux client . i have error while sending mail through thunderbird smtp auth error how can i resolv the issue .....
View 1 Replies View RelatedI just got control over a server that was hacked several months back. The other day we started receiving rejected emails sent from my server to a yahoo email address that is no longer active that contained users login information. I am trying to find the process that is sending these emails. So far its been like finding a needle in a haystack. The email that is being sent is appending the login information each time it is sent so there must be a local file that contains this information. I have tried using grep and find without any luck.
View 2 Replies View RelatedI have a 64bit linux server with 5 virtual hosts on it. When someone fills out a contact form on one of the sites...I get 15-20 copies of the same email. At first I thought it was the kids clicking send multiple times because the first emails were coming from the children's ministry "Email The Cast" section. But then I started getting multiples from the adult sites too. All contact forms are set to come to me.
What's stranger is that my registration section for one of the sites uses the SAME php script (different file) to email me a notification that someone has registered but I only get 1 copy of that.
I have postfix relaying email to the internet for my LAN I need to configure postfix to trust only one SMTP server to relay his emails to the internet
View 4 Replies View RelatedI have lenny with postfix, countier-imap, squirrelmail installed i can send emails but i can not receive any emails.
View 6 Replies View RelatedI'm stuck with postfix. It cannot send emails and I cannot find out why! smtpPort 25/tcp is open. I can telnet localhost with 25, but not the localhosts IP(192.168.1.15). Sendmail is OFF. Here is the main.cf file!
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
[code]..
my postfix to send and recive external emails, but many recive in trash folder.Other programer say me that is need some configurations in postfix with and dovecot to work, but i dont know what!This is my first time configuring a linux server at this week.
my main.conf
sample_directory = /usr/share/doc/postfix-2.3.3/samples
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
[code]...
I have a linux box on my DMZ with postfix on it. I have exchange on our internal LAN on 10.152.0.104.
View 6 Replies View RelatedI've got an uber simple test mail script in php on my awesome new dev machine running Ubuntu:
PHP Code:
Unfortunately, something is preventing mail delivery. I can't tell from this error log whether it's the remote machine rejecting me or whether it's my machine rejecting the self-signed cert on the remote machine:
Code:
I'm wondering what I could change in my postfix configuration to remedy this problem.
I tried setting smtp_tls_security_level = may = may but this did not change anything.
I have configured Postfix on a Ubuntu 8.04 box using this tutorial:I can send emails but I cannot receive any email because of a "bad recipient address syntax:"The log from /var/log/mail.info says this:
Code:
Apr 25 14:46:06 360romania postfix/pickup[31716]: 74A682190661: uid=0 from=<root>
Apr 25 14:46:06 360romania postfix/cleanup[32402]: 74A682190661: message-
[code]...
Is there any way can read content of email in queue? Or emails sent in few last seconds?
View 1 Replies View RelatedI am newbie to postfix. I added a new domain to my postfix server in the main.cf under mydestinations variable and the relay_domains file. Also, added this domain to my backend exchange server. When I send a test message from the new domain, my messages from that domain appear to be stuck in the "queue active". What does it mean when you are stuck in this queue? Does this mean that my backend email server (exchange 2003) isn't allowing messages from this new domain OR that the POSTFIX server still needs configuring.
View 2 Replies View RelatedI have searched through piles of postfix and sendmail documentation but I'm not sure of the terminology to describe what I want to do so I'm never sure what solutions are workable. Null client, relay hosts. What I have already is a RHEL postfix server which sends and receives email. What I want to do is add a second postfix server to the network. The second server should accept only ssl smtp mail and forward it on to the main postfix server. Users shouldn't use it for normal internal sending/receiving. It's only to allow me to support ssl smtp from people working out of the office without messing about with the main postfix server. I thought a Null Client sounded likely but I don't think it will accept mail. Is it a relay host I'm trying to configure? Any pointers on configuring something to just accept secure smtp and forward?
View 1 Replies View RelatedI am looking at setting up a multiple postfix SMTP servers for a single domain. Below is my requirement, I would appreciate if someone out there could guide me to achieve this using postfix..
1. Want to setup 2 postfix SMTP Server with 1 POP3 Server.
2. Server1 will host POP3 & SMTP services for domain "metallica.one".(IP: 1.1.1.1, MX: mx1.metallica.one)
3. Server2 will host only SMTP services for domain "metallica.one" (IP: 1.1.1.2, MX: mx2.metallica.one)
4. Server1 & Server2 will be used as load balancing for sending mails. (either manual settings in email client, or auto-loadbalancing is still preferred).
5. Mail received for domain metallica.one on Server2 should be pushed/forwarded/relayed to Server1 where POP3 services are running.
6. Outgoing mails for other domains from Server2 should be sent directly to the other-domain-recipients without relaying to Server1.
Yesterday i run a postfix everything works fine and today it hangs up. if i dial "telnet localhost 25" i get (before day i get 220 answer and ordinary hello):
Code:
Trying 62.197.207.43...
Connected to trons.sk.
Escape character is '^]'.
and nothing go far.
[Code]....
I'm experimenting with with mail-servers now and I'm trying to configure postfix to send emails from one email(pop3 is gmail) to any email outside the local network. Server is Ubuntu 10.10 with the last updates.
View 1 Replies View RelatedI have recently installrf MailScanner on my CentOS 5.5 and followed this instruction [URL] However, my postfix doesn't seems to be working after the installation. All the emails sent (using squirrel) mails are being held at /var/spool/postfix/hold
View 1 Replies View RelatedI'm building a replacement postfix email server and I'm getting intermittant loss of sent emails; where: sometimes mail ends up at the recipient (a hotmail address) and sometimes not. Having an offsite relay (or posting directly to the internet) doesnt help either. (Although using hotmail itself as a relay always works despite logged complaints about unchecked ssl certs) Most dissapointingly the log files for the smtp transations are the same for successfully received emails as for the "lost" emails.
[Code]....
I've recently followed a guide I found online [1] and installed Postfix and Courier on my server machine. I can send emails from the server to any email address but unfortunately I can only receive emails sent from the server - it's only accepting emails sent locally from the host.
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