I want to change all outgoing email from my Ubuntu server running postfix to change (masquerade) the username. eg. james@example.com will appear as 'From' 'admin@example.com'. I already know how to masquerade domains, but not users.
View 3 Replieswho manage Postfix servers, what do you recommend is the best way to refuse all incoming and outgoing mail to specific domains? I want a blacklist of domains such as:
- AOL
- Yahoo
- MSN
- Hotmail
- Gmail
Is there a proper way I can tell Postfix to please deny sending and receiving SMTP traffic to and from those specific domains I specify? I see no need in my corp. mail server has to communicate in any way to those. I allow access to all those accounts via port 80/443 so they can just login to the web and send non business related junk this way.
I recently moved over user from an old box running postfix(v 2.0.16) over to rhel 6 running postfix (v mail_version = 2.6.6). ive tried to make sure all the files are of correct permissions and that the main.cf file is configured corectly. However there is something wrong as when i run postfix: service postfix server i get no error but when checking the status:service postfix status i get: master dead but pid file exists Looking into /var/log/mailog i find this line being the issue:
Feb 25 16:24:39 puny1 postfix/master[3517]: fatal: fifo_listen: create fifo public/pickup: Permission denied
I gather this is a file permission issue and ive tried to make sure the public folder in /var/spool/postfix is correctly set but still no avail.
I have Postfix + Unix Accounts + Virtual Domains. I have a bunch of domains hosted on my machine, let's call them [URL] [URL] and [URL]... etc Until know, domain2.com, domain3.com were mapped in virtual domains to [URL] So this is how /etc/postfix/virtual looks like:
[URL]
Like I said, all mail accounts are unix accounts, so, if for example I have the user "paul" this user will receive e-mail for ALL DOMAINS. [URL]But as it turns out, I now need a COMPLETELY ISOLATED domain... let's call it [URL]. So If I create a new user, let's call it "steve" I want steve to receive e-mail ONLY on [URL] and not on all others.
I would have to redo the whole thing from the beginning. I'd have to comment out the $mydestination parameter in the main.cf file and start using only virtual domains. So if I have the following users: paul, steve, sally, megan, jenny and I want paul and steve to ONLY receive mail for domain1.com, sally and megan to receive mail for domain2.com and jenny to receive mail for domainX.com, my /etc/postfix/virtual file would have to look like this:
[URL]
I'd have to create the unix account and then start modifying the /etc/postfix/virtual file.
I have a postfix mail server up and running. I've added more than one domains to recive mail by adding them to the :/etc/postfix/virtual and poiting to a UNIX user account. That works fine. But when users send out mails (From squirrelmail) all users send from the same domain. How do I add a $myorgin to a virtual domain?
View 1 Replies View RelatedI am setting up a Postfix MTA that will be only sending mail for 10 different domains. We have other servers that will be receiving the mail for the domains so I only need to set up for sending on Postfix.
What my issue is I am trying to configure Postfix so that when it sends mail the header shows what domain the mail came from and not the domain the Postfix server is set to. For example....
[URL]
When I send mail from domain2.com I want it to show in the header it was sent from domain2.com and not from domain1.com. What do I need to set in postfix so that this happens? Right now no matter what domain the mail is from the header always shows the server domain and I can't have that.
I am running a spam filter on debian lenny 5.1 with postfix, amavis-new, spamassassin, and clamav. It works pretty well but I would like to finish tweaking it to minimize the mail getting quarantined. It really isn't quarantining anything that isn't spam, except for an occasional list mailer. However, the quarantine is huge, and takes a while to go through. I noticed that much of the spam is coming from foreign country tld's like .cz is there anyway to have postfix run a check on the header and if the email, or smtp origination is from a server from a foreign tld have it just rejected. I can whitelist anything if need be in the future but as of now we don't do any business overseas and don't need to worry about blocking legit email.
I think this should be possible, however, I am unsure of the syntax for the file, where to put it and if wildcards are possible in domain blocking like
Code:
*.cz REJECT
I would like to set my postfix to reject any numeric domains. I am seeing in my mail queue mail from domains like 2212.com, 263.com, 29.com and others. Because there is a variety of these, I don't want to track each of them and block them one by one. What do I need to put in my access file to reject any numeric domain? Is it possible to have a numeric wild-card reject in the access db?
View 1 Replies View RelatedI've sifted through hundreds of Google results, but I cannot seem to find a tutorial or how-to for installing and configuring Postfix on Red Hat Enterprise for use with multiple domains. We have a web server serving four websites so far. Each of these websites has their own domain that they'll require email for.
View 3 Replies View RelatedI'm having a problem with a new install of postfix... it won't relay mail to external domains. Internal mail is fine.I'm using virtual_mailbox_domains so that I can have multiple domains, and I've set dovecot to use local files with encrypted passwords.Here's my main.cf
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
[code]....
I have configured postfix to send/receive mail from/to for two domains we manage. [URL] and [URL] Most of the cases there is no issue sending out or receiving emails. However, a few users of domainY.com complained that their senders were not able to sent them email. after much investigation, we started thinking that the mailserver failed to send us email may the failing on doing a SMTP Banner issue.
Is there anyone who knows how to deal with this SMTP banner issue with multiple domain. We want different SMTP banner when doing EHLO on different server.
530 mail.domainX.com ESMTP MailEnable Service, Version: 1.981-- denied access at 11/16/10 10:51:21
530 mail.domainY.com ESMTP MailEnable Service, Version: 1.981-- denied access at 11/16/10 10:51:21
i have configured postfix to deliver mail from an internal mail server to external domains... however i keep getting this errors
Code:
un 10 23:23:59 smtpserver postfix/local[28831]: 7800CF0058: to=<root@smtpserver.domain>, orig_to=<postmaster>, relay=local, delay=0, status=sent (delivered to mailbox)
Jun 10 23:23:59 smtpserver postfix/qmgr[5989]: 7800CF0058: removed
Jun 10 23:25:19 smtpserver postfix/smtpd[28824]: connect from unknown[192.168.5.22]
[code]....
I'm running a server with two sites which both need to be able to send emails. Currently I have Postfix set up to send email via Google Apps. This works fine, but Google's servers ignore the From: address I specify and substitute the one I logged in with. Is there a way to make Postfix log into Google Apps with a different username based on what site the email is coming from? The server does not recieve any mail itself; Google recieves it and we have it set to forward it to the appropriate person's real email address. I'm only worried about sending mail.
(Postfix is not a requirement here, so if there's another mailer that can do this better, I'm open to ideas. However, sending email directly from the server isn't an option as it's a residential IP address and blocked by most of the big email providers.)
I am currently running a apache/postfix email service on my server. I am using aliases for two addresses for example:
trscookie@serverone.com
trscookie@secondserver.com
so the emails no matter which domain receives the email trscookie always will receive the email.
However I am unable to work out how to 'reverse' this process, for example.
If i was to go to secondserver.com/webmail I would like the emails to get sent from trscookie@secondserver.com however they are currently all coming from serverone.com. Is it possible to configure this so that it is sent from the correct domain?
Here is my main.cf:
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix
[Code].....
setting up DKIM AND POSTFIX FOR UBUNTU 9.10 WITH VIRUAL DOMAINS
View 1 Replies View RelatedLet me start off by saying I am experienced with computers, though my knowledge of Linux and networking is limited. I've just recently started setting up a Ubuntu 10.04 server to be a SMTP server. I've followed this guide by the letter: [URL] What I've attempted, to test the server, is the following:
telnet localhost 25
ehlo localhost
(this returns all the desired information) I then do a MAIL FROM my domain which is accepted, and try to do a RCPT TO an external mail server (gmail) to test sending an email. I am then told 'Relay Access Denied'. I'm sure that there's something fundamental that I'm either not understanding or not doing correctly. I simply want an SMTP server that can send to other domains. What do I need to do?
I would like to setup postfix to act as a relay for the outgoing mails of a couple of servers each serving it's own domain.The mails we are talking about are standard administrative emails like user registration, password reset request. The volume of those mails will naturally grow as the site grows. Which for me poses the problem that depending on the growth of the site you will sooner or later hit the quotas imposed by (my otherwise preferred) providers like GMail or smtp.com.
So what I need is a mail relay that will only accept mails from authenticated clients from hosts in its access list and relay their mail without restrictions. Is that possible with postfix? What has to be changed in the config and what are the pitfalls?
How to restrict users to send mail to outside domains in qmail server, i have centos and qmail installed
View 14 Replies View RelatedI've got a request from one of my company's subsidiaries to block all incoming and outgoing mail for a group of users. I've read up some guides on access.db and I know how to do that, but now they want to allow these users to receive emails from a few select domains, and block the rest. To summarize:
1) Block all incoming and outgoing email to users in team A, except mail from [URL]
2) All other users can receive and send mail from/to any domain.
I'm in the process of starting a migration from an old postfix server to nice shiney new exim server however there are a few things i'm really not clear on and i'm hoping that some one here could point me in the correct direction. Okay the postfix server at the moment does the follwoing ( i'll try and keep this simple ):
* accepts incoming mail for users on multiple domains and puts the mail in the users mailbox ( external -> internal )
*accepts mail from users on multiple domains to pass on to the outside world ( internal -> external )
Obviously the POP and Imap functions are handled by other daemons.. I'd like to replicate this sort of setup on the new exim box, however the guides i can find only help with configuring the exim system for incoming mails ( external -> internal ) for multiple domains and i cant seem to find a guide that would indicate how to do both ( internal -> external and external -> internal ) on one box. I'm guessing i may have to do some sort of auth to get exim to accept and then handle the internal -> external side of things?
Two exchange servers internally. One is setup for example.com (192.168.1.10) and the other is setup for example2.com (192.168.1.20) Both are behind a single public IP.
I want to use postfix to sit in front of the two exchange servers. Postfix will accept mail for both domains and relay to the appropriate server. I have postfix installed with only defaults at this point.
Alright I have read through and tried many different tutorials but a VAST majority of them are with virtual users. This is my own personal email server so virtual users is unneccessary when I can just use the users personal mailbox.
My postfix main.cf there are 2 things I am unsure of. 1) For system users which local_recipiant_maps do i use? 2) What should mynetworks be?As I have been testing it out through telnet I can send mail but it doesnt get to my test email (a gmail account) and when i try to send an email locally it seems that everything works fine but the mail doesnt get there, and the error i am getting is that it cant find the user.
I'm just getting started with postfix for the first time (using courier pop) and everything is working well. However I can't seem to figure out how to only allow some system users to have mailboxes?
For example I have a few accounts which are FTP only accounts but they still have mailboxes under postfix? Is there any way to tell postfix the accounts that I actually want mailboxes for?
Also on a side note, I notice that mail seems to be stored under the user's home directory. I'm scared they may accidentally delete them.
I have installed ubuntu 10.04.2 LTS and followd all the steps from the tutorial from [URL], postfix and dovecot works fine ...but ...is there any way to create email accounts (postfix account) without creating linux accounts for each mail account ?
View 4 Replies View RelatedI just want to create virtual postfix users using static external file, without using dovecot as MDA or mysql db.
View 1 Replies View Relatedi am trying to set up a mail server that will support users in a LAN in my school. I am using postfix on a Mandrakelinux distro.
I can send mail when I am root to the other user on my (same) machine both when in command line (mail command) and on Graphical mail client (Kmail ) but the user (sam) cannot send mail to the root account on either interfaces.
I followed the postfix configuration settings on John_Wiley_-_Redhat_Linux_Networking_and_System_Administration_3rd_Edition.
I did search the forum but didn't find an answer.
I have setup Postfix + Dovecot on my basic debian 5 server. If I send a message to a localuser@mydomain.com from mutt, it delivers just fine and is visible when viewed through squirrelmail, I can also send just fine.
My issue is that irrespective of what options I set in main.cf, I cannot for the life of me get Postfix to stop erroring with "Recipient address rejected: User unknown in virtual alias table". I'm stumped.
My main.cf is as follows code...
I do not want to setup virtual hosting with MySQL or similar, I literally want to receive mail in local users mailboxes for a single domain. Any ideas on what's missing?
After upgrading from a working 9.10 system to 10.04 Postfix has stopped delivery email to users. Sending email is fine and IMAP(s) and POP are working fine but receiving messages now get the follwing message
postfix/pipe[14331]: 65B941B61F0: to=<me@fred.com>, relay=dovecot, delay=1081, delays=1081/0.02/0/0.1, dsn=4.3.0, status=deferred (temporary failure) Using Postfix with Dovecot, MySQL & Amavis plus spamassasin
Does anyone have any idea what the upgrade process may of changed in the upgrade none of the conf file were replaced during the upgrade and only one parameter caused a issue for Dovecot after the upgrade "ssl_disable = no" after disabling this dovecot started
I've been banging my head against the screen on this strange problem. Somehow my server sends out spam mails to a lot of aol mail addressess. The mail.log file looks like:
Code:
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: E95C2B48DB4: from=<HappyShopping@somedomain.nl>, size=1912, nrcpt=1 (queue active)
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: 5D4E0B48DB5: from=<HappyShopping@somedomain.nl>, size=1904, nrcpt=1 (queue active)
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: 8F540B48D04: from=<NewYearSale@somedomain.nl>, size=1894, nrcpt=1 (queue active)
[Code]...
I have a mail server running Postfix and the problem I'm running into is that when trying to send mail, I get a "relay access denied" error.Inside my main.cf, I did not specify 'smtpd_recipient_restrictions' so by default, the variable is:
Code:
smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
The 'mynetworks' variable looks like this:
[code]....