Fedora Servers :: Postfix Server "reputation" / Mails Are Blocked?
Apr 21, 2009
I've got a Fedora postfix server that I just upgraded from 9 to 10 using preupgrade. Starting yesterday, some messages were rejected by servers because the IP address had a poor "reputation". The odd thing is, the IP address they're registering isn't the IP address the server is sending from.
When I look at the full headers of our outgoing e-mail, the e-mail is listed as coming from ***.***.***.11, which is the correct address. But these services are somehow tying the e-mails back to ***.***.***.12, which is used for a different purpose entirely. Since this *.12 address doesn't match the MX record, I'm assuming that's why the mails are being blocked, but I'm not sure how the mails are being identified as coming from that address in the first place. It's odd that this just started when I upgraded.
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May 17, 2011
I've enabled popb4smtp in my mail server. Is this because of the IP 117.58.246.10 don't have a dns record? How can I sending email from this type of Ip which don't have dns entry?. But if I enable SMTP auth I can send email form this same ip. Another thing is I can connect to port 587 from the email client to send email but can't connect to port 25.
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Jul 21, 2010
On the postfix mailserver of our company I'm seeing several of these messages in the deferred queue (apologies for the terrible formatting, I couldn't get it any better) code...
looking at the headers, there is probably something wrong with our DNS-server, which we will investigate, but I still have some questions about the failure notice:
- why are the failure notices refused? Is that a fault on the sender side, for example sending the wrong return address?
- where does this mxcorp1.pacific.net.sg[192.169.41.21] come from anyway? I don't see it anywhere in the headers.
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Nov 15, 2010
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
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Jun 21, 2010
How do I make my postfix mail server auto delete mails from user mailboxes after say 1 or 2 months?
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Nov 7, 2010
So, I have mail server ( posfix ) and ldap server, they works fine. I can add/delete users from posfix, and they can send / receive mails to/from any address. At same time my ldap server works fine, I have also users in it, my "simple" question would be...if I have user "test1" in ldap, what I have to do to connect--enable that user to send mails ?
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Jan 12, 2010
how can I best transfer my mails that are sitting on my old exim server to my new postfix server?
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Mar 21, 2011
I have configured dns, postfix, dovecot, https, squirrel mail on fedora11 everything working very well. While configuring out look the same domain users getting mails the virtual users not receiving mails it showing pop3 error. But he can able to receive mails in his home directory.
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Apr 25, 2010
can i just copy/backup postfix mail queues in /var/spool/postfix and paste that folder back in after i done migrating all users and mails to a new mailserver?
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Mar 11, 2010
Here is what i do: make clean make makefiles CCARGS='-DEF_CONFIG_DIR="/opt/product/postfix-2.6.5/etc"
-DEF_COMMAND_DIR="/opt/product/postfix-2.6.5"
-DEF_DAEMON_DIR="/opt/product/postfix-2.6.5/libexec"
-DEF_MAILQ_PATH="/opt/product/postfix-2.6.5/bin/mailq"
-DEF_DATA_DIR="/opt/product/postfix-2.6.5/lib"
-DEF_NEWALIAS_DIR="/opt/product/postfix-2.6.5/bin/newaliases"
[Code]...
make install then i got this error: postfix: fatal: chdir(/usr/libexec/postfix): No such file or directory make: *** [install] Error 1 I don't understand why it's checking the usr/libexec folder for the daemons although I've set the folder to /opt/product/postfix-2.6.5/libexec in the makefile. Here is also the cat of my makedefs.out:
[Code]....
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May 2, 2011
I use this command to fetching mail from gmail it work good but it does not retrieved mails from server as I read from manual.
Quote:
fetchmail -d0 -F -K pop.gmail.com
What is wrong and what should I do?
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Sep 1, 2011
I've running my mails from 3 domains on Google Apps for several time, but I think it's time to set up my own Mail-Server now. I have a vServer and want to migrate my existing mails after setting it up. Now I have 2 questions.
1. Which components do I need / do you prefer for a mail-server(imap, smpt, webinterface)?
2. How do I get all my existing Mails in there?
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Feb 9, 2010
I have a 9.04 server with postfix imap server. Clients (evolution 2) save sent items in local computer folder. How can I tell postfix to save sent mails in a sent items folder in users mailbox?
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Jul 11, 2009
Small server running 5.3 - stock postfix configured to use Maildir. Dovecot configured but both pop and imap ports blocked by firewall. Access to mail is via Squirrelmail via https. Configured to virus scan via ClamAV. Works just fine. Now I want to add procmail filtering. So I create these two files - ~/.forward and ~/.procmailrc in my user home dir: "|exec /usr/bin/procmail -f- || exit 75 #mpeters"
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Sep 9, 2010
I have Postfix set up to forward e-mails to two different addresses. This is my /etc/postfix/virtual:
Code:
I'm forwarding the message back to myself because that's the only way I know if the original message is even getting delivered in the first place.
The problem is that the e-mail isn't making it into my GMail inbox. I've checked my spam folder and it isn't there. And bafflingly, according to the logs, the message does seem to be getting sent:
Code:
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Jun 16, 2011
I implemented postfix as mail gateway but i need to block the ability to send
mails via telnet
How can i achive this?
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Sep 4, 2009
we have a Postfix mail relay server. Not to be an open relay we use check_sender_access restriction with allowed sender domains. Is there a way how to configure postfix to accept mails from any domain for a specified recipient? Something like
Code:
if (recipient_address==host@mydomain.com) accept; We have an admin mailbox and we need it to be accessible from everywhere.
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Mar 3, 2010
Today I got a call from our chairman saying that he gets duplicate mails. When I checked the postfix logs, I found that it is the locks that are creating problems. The mail which duplicated was to an alias which included our chairman. In that alias, the mailbox of a user was locked since he was receiving his mails (I use dovecot for mail distribution), and hence the lock was on for that mailbox. When postfix tried to deliver the mails, it encountered the lock and the mail delivery was stopped, thus by requeuing the specific mail. While postfix retried the delivery, it found another lock with another mailbox and again the delivery was stopped, thus sending the mail back to queue
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Sep 9, 2010
I have Postfix set up to forward e-mails to two different addresses. This is my /etc/postfix/virtual:
Code:
jason@woollymammothlabs.com jason@woollymammothlabs.com, jason.swett@gmail.com
I'm forwarding the message back to myself because that's the only way I know if the original message is even getting delivered in the first place.
The problem is that the e-mail isn't making it into my GMail inbox. I've checked my spam folder and it isn't there. And bafflingly, according to the logs, the message does seem to be getting sent code...
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Nov 14, 2010
I've setup postfox on Fedora 13 in order to send emails to and from gmail. I thought this was working, but it is dropping approx 50% of mails with an error. The other 50% work OK. It seems completely random.
I've read the link but I stil dont quite understand.
My machine is just a PC, on talktalk's network in the UK.
I use dyndns to allocate a DNS alias (well several actually) to my dynamic IP address - not sure if this is relevent.
Is it failing due to a reverse DNS lookup on the dyndns host? Or is it because it cannot resolve my localhost.localdomain?
I used to have this running on opensuse and swear it used to work 100% of the time.
What am I doing wrong?
Quote:
Nov 14 18:12:40 linuxserver1 postfix/smtpd[14619]: connect from localhost.localdomain[127.0.0.1]
Nov 14 18:12:40 linuxserver1 postfix/smtpd[14619]: 367D428388: client=localhost.localdomain[127.0.0.1]
Nov 14 18:12:40 linuxserver1 postfix/cleanup[14622]: 367D428388: message-id=<20101114181240.367D428388@linuxserver1.localdomain>
Nov 14 18:12:40 linuxserver1 postfix/qmgr[2834]: 367D428388: from=<myaccount@gmail.com>, size=3309455, code....
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Apr 13, 2010
I view my /var/log/maillog and see tons of lines like this code...
I think those are some kind of SMTP attacks from this host by I tried to block hit with Iptables but it seemes to peace them off and they keep coming...!
please some kind of postfix-configuration solution?
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Nov 19, 2009
As a beginner I installed Fedora 11 yesterday. Everything went well until I installed Evolution and Thunderbird. Incoming mails went well, but outgoing mails not.
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Aug 17, 2010
i've set up a little mail server ob my private server, using getmail to get the mails from different pop accounts and to send it to maildirs of some virtual users, and i use dovecot as imap server to provide the mails to my clients which are mostly outook 2007. i run getmail as a cronjob which fetches my mails every 2 minutes, anyhow i'd like to run it on demand when a client pushes the send/receive button. is there a way to tell dovecot to run getmail on demand?
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Apr 12, 2010
I installed Ubuntu 9.10 and tomcat 6 java servlet container. I am trying to run the tomcat server on port 80, so I edited tomcat's configuration file (server.xml) and changed the default port from "8080" to "80". I launched tomcat server, went to my browser and entered:[url], but it says can not find server/location. Then I edit the server.xml and revert back to port "8080" and then enter: [url] and everything works fine. So my guess is some other service is taking up port 80, but I would think not, since I just installed Ubuntu and made sure apache isn't installed or running.
So I went to "System" --> "Administration", then choose "Network Tools". I then executed Netstat and did not see anything taking up port 80, but I do see port 8080 taken (assuming it is the tomcat server). Then I also did a Port Scan and entered my IP number. Again, I don't see port 80 taken, but do see 8080 being used.
I had a winxp laptop computer behind home wireless and was running tomcat 6 server fine with it, but it over-heated and died recently. So I got a used laptop and just installed Ubuntu 9.10. I have not changed my wireless router settings. It is the same as before. So I have ruled out my home's hardware/network equipment.
So here now I sit, wondering what is up?
For security reasons, is port 80 initially blocked by Ubuntu for some reason? Is there something I have to do beforehand to free up port 80?
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Sep 13, 2010
i want to run a postfix server as a backup mx, but anybody knows how can i collect the fist server mails with this one? this is multipop action but how can i do it with dovecot or any other pop collector?
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Jun 13, 2011
We are planning on rolling out a mail service that will backend a webmail/groupware interface using postfix and dovecot, and we are trying to nail down an architecture for the system. I was hoping I could get some opinions from you good people on the different models we have come up with, and any improvements. To preface this discussion, we use NFS as the backend storage for mail so that clusters of mail servers can be created.
One possible solution is to separate three services, inbound email, outbound email, and message retrieval onto separate servers. We currently run a mail system with 65K users in this manner and it works, but there is a lot of wasted cpu on the inbound and outbound mail servers. where the dovecot servers are doing most of the work.
Another solution would be to combine the dovecot and inbound postfix servers to run dovecot as the local transport agent for postfix with LMTP, giving us quota and sieve capability.
The last solution is to run all three services on the same machine, giving us a single server image that we can clone on demand when we need to add more performance.
The single server, all three services, solution seems to be the simplest to build and manage, but putting all your eggs in one basket like that concerns us. What if there is a sudden influx of mail from our filtering platform, and it slows down all the other processes? What if the NFS server becomes disconnected from the network and the load average on each server skyrockets killing the ability for outbound mail to flow (where a separate outbound mail server would continue running despite this issue)?
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Jun 14, 2010
I just installed opendkim but I have no idea how to set it up.
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Feb 23, 2010
Setup my postfix mail server and courier-imap/pop. My postfix server now is working with tls and saslauthd, I can send/receive email inside my domain as well as outside. However, I need two separate smtp and imap/pop3 server, I mean two machine - one with smtp function and one with imap/pop3 function working together.
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Dec 2, 2010
I've been looking for a way to filter out emails on my postfix server by GeoIP data. I couldn't find anything that fitted the bill so wrote my own in Python as a postfix policy. Thought I'd post it here to see if it's of any use to anyone else. I've attached a tar of the files as the Python formatting will get mucked up by the forum code. Comments/improvements are welcome (be kind ) First file is : policyd-geoip which is owned by root:root and placed in /usr/bin with 755 perms
[Code]...
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Apr 18, 2011
I currently have a personal use server setup in my home and would like to be able to send emails from my domain name.
At&t blocks the standard ports used so some form of forwarding would have to be used. I've looked at other guides and followed them to the key but it appears I'm always missing something.
So my question here is could anyone write a detailed guide from start to finish on how to install a postfix server behind an at&t connection complete with MX record and firewall configuration information?
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