Ubuntu Servers :: Configure A POP3 / IMAP Proxy Server?
Jan 25, 2011
This is my first post to the forum
I've recently migrated my office PCs to ubuntu. My server doesn't server any big purpose but to provide Internet Connection to the rest of the nodes. Things were quite easier during the windows era using ICS.
Even in Ubuntu we were able to do it using the "shared network" option, simple & straight forward. But things got complicated only after installing "squid". Needless to say it brought in a lot of add ons as far as the http proxy serving is concerned & we are enjoying a better internet(http only) connectivity without any doubt. But we are not able to use our email clients, MS Outlook or Thunderbird
But to best of my knowledge squid strictly is a http proxy hence doesn't support handling requests on ports other than 80. (465 & 995 in my case)
Now I have two queries, 1. Can "Squid" really be used to do what I want here??? using iptables, port forwarding or any other mean
& 2. Can any one suggest a good pop3/imap proxy as good as squid is.
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Mar 30, 2010
I want to know that by default do we need to configure SMTP and POP3/IMAP sever for sending and receiving mails in Linux server and client machines or we can directly send and receive mails without configuring these mail servers?
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Mar 1, 2011
I used to have this setup on an old server and i'm trying to move it to a new server.I have a new box installed with Ubuntu 10.10, sendmail, courier-imap and courier-pop.I've configured virtusertable/local-host-names/virtual-domains/sendmail.cf and such.Everything is set up to take any mail arriving to @mydomain.com and move it to a user called "mobileinbox".When i log in as mobileinbox (su mobileinbox) and check my inbox using mutt, i see all the e-mails , but when i login from the outside using pop3 or imap , it says i have no new emails.
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Jan 12, 2010
Now, i want to change port smtp, not use 25
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Jul 25, 2011
I have installed Postfix with LDAP, Dovecot IMAP/POP3 Server on RHEL 5.5whether Postfix without IMAP/POP3 server is possible??
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Feb 16, 2011
I want to retrieve emails from my POP3 servers to my home server. But from there, I want to be able to access them via IMAP from my other computers, i.e. desktop, laptop, phone. And then of course I want to be able to send emails from said devices via IMAP to my home server which POP3's them out to my mail servers. Basically, I have a few POP3 accounts with various hosts and I want to conveniently interact with them from lots of devices using my preferred software (i.e. Mutt, or Thunderbird on my Windows boxes). My home server is Ubuntu Server if that's relevant.
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Sep 24, 2010
My server listens to POP3/IMAP requests. Some users have configured their mailers with high checking frequencies, say once every minute, such that the system logs are full of entries with no significance at all.I'd like to ask if there is a way to limit the per IP frequency of POP3/IMAP access ?I'm using "xinetd" to wrap the "ipop3d" and "imapd" which come with the Alpine package.
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May 13, 2011
i have some problems to start my dovecot server. I tried to install it from webmin using "un-used modules" but it was allways the same error: "E: Unable to locate package dovecot-pop3d".When I tried to install it from console using the commands: apt-get install dovecot-imapd dovecot-pop3d dovecot-common - and there are no problems with dovecot-imapd and dovecot-common, but still the same error with dovecot-pop3d. After command: service dovecot status: could not access PID file for dovecot ... failed!
After try to start dovecot with comand "dovecot": Error: mail_executable: Can't use /usr/lib/dovecot/pop3: No such file or directoryFatal: Invalid configuration in /etc/dovecot/dovecot.confI've read a few similar threads in this forum about dovecot errors but still can't to fix it.
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Jul 3, 2011
I'm trying to configure dovecot in RHEL6, but seems system won't accept local user login. I've already disabled pam. I've tried mutt -f imap://xxxx, and Thunderbird to connect as imap and pop3, but both failed, seems dovecot won't accept the password of the login user.the dovecot info log as, Jul 03 20:48:42 imap-login: Info: Disconnected: Too many invalid commands (no auth attempts): rip=192.168.1.3, lip=192.168.1.3, mpid=0, secured
#passdb {
# driver = pam
# [session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=<n>]
# [cache_key=<key>] [<service name>]
[code]....
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Jul 16, 2011
I had installed opennms im getting email alert when all port are getting down and i also getting pop and imap messaage to whn th eport get dwn i want to stop asap mesage of pop3 and imap..whether its poasssible to block partilar imap and pop3 port .
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Mar 31, 2010
My actual mail is via pop3 from verizon. What I've done so far is just pull my pop3 mail onto my main machine at my house. But I'm finding I'd rather have a single imap server on my network so then all my machines could see the same mail.
I don't really want the imap server to poll verizon for mail, I just want the imap server to check pop3 mail at verizon only when one of my mail apps checks into it to look for mail.
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May 21, 2010
CentOS 5.4
/etc/init.d/dovecot start
Starting Dovecot Imap: Fatal: Protocol pop3 given more than once
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Oct 2, 2010
Having my Diploma Final Project on setting up a virtual mail server within Local Area Network (LAN) only. I had follow this how-to [URL] and complete up to squirrealmail web mail. I added two new user to try on sending and receiving mail. It works. I run CentOS on VMplayer. I using my laptop to do all the stuff, the laptop default OS is windows 7, I install VM player on it and run CentOS inside the VM Player.
I want to do testing on Windows 7 side by installing Thunderbird email client program, I want to connect to mail server with SMTP, IMAP/POP3 using the email service. I have problem while setting up user account on Thunderbird, Thunderbird seems like cannot detect my CentOS mail server. How? Do I have to do any other configuration on CentOS? Any DNS? Port number for IMAP, POP3 or SMTP?
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May 4, 2010
I'm somewhat familiar with Linux and became pretty decent at installing and configuring packages in Ubuntu. One of the things I was able to do with my tinkering was set up a functioning imap and pop3 mail server using dovecot-postfix. Now I'm experimenting with Slackware to get the feel of another distro, and I noticed that the mail server packages were already installed. On my client computer they can pick up that I have users configured and my mx record is working.
However it is failing to send mail saying that it is failing to relay the e-mail message and that the server responded 5.7.1 which was a problem that I was having in Ubuntu when first configuring the mail server. The fix was to edit the postfix.conf file and adding the localhost name of my server. Does anybody know of the file that I need to edit to make it possible to relay my messages with both pop3 and imap.
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Jan 26, 2011
I'm trying to set up my gmail account with Evolution. I am trying to set up a mail client where -
1) All the mails are stored locally, so that I can work offline. When I reconnect, the client (Evolution) syncs with the server - sends emails and updates any changes.
2) All the labels/folder system to be respected and retained.
After struggling with various sites that argued Pop3 and IMAP (numerous blogs and google searches), I came across this conclusion (pls correct them if they are wrong)-
1) Pop3 allows mails to be stored locally, but will not break them up into folders.
2) IMAP will allow the folder system, but will only store the headers of mail on the local server, and the content will be downloaded as per request.
1) Will Pop3 access allow syncing between the local version and the server version? For instance, a mail read in Evolution should be marked as read when I sign into the web-interface as well.(I can always create a filter/rule that replicates gmail filters)
2) Will IMAP allow me to store all mail locally (isn't this exactly what IMAP is not!)? The combination of imap-gmail-evolution was not so successful when I tried it out - too slow!
PS: I would prefer Evolution over Thunderbird so that I can integrate the Calendar. However, if ThunderBird is the easiest solution, then it's fine too...
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Aug 7, 2011
I'm trying to connect to Gmail to pull my emails from the Gmail site, via the IMAP/POP3 access server. However, I can't seem to connect to the server when in Ubuntu code...
And it hangs here indefinitely. However, if I reboot my PC into Windows, it connects fine. I've turned off UFW so I would expect the connection to work. I've also been able to POP3 into other servers, so it seems to be something specific to the gmail IP.
Anyone else had the same problem or know how I can debug/fix this?
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Oct 30, 2009
Is it possible in Linux to restrict POP3 or IMAP for particular users.I need a confirmation on this, that it is possible or not in Linux.
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Feb 25, 2010
1- how to config pop and imap on sendmail server
2- how to config smtp restriction on sendmail server
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Jan 20, 2011
I would like to change an email account from POP3 to IMAP on an ISPConfig 2 system, I can see that the IMAP and POP3 process are both running.
I have the Maildir check box ticked for the server
Is there anything else I need to do, or is it just a case of changing the mail client from expecting POP3 to expecting IMAP?
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Mar 1, 2010
I'm looking for a method to sync my calendars on my IMAP server with both my Thunderbird/Lightning any my Blackberry. I found "IMAP Calendar Proxy" here recently, but it has been inactive for 5 years. I've seen people suggesting the use of services like Plaxo and such, but I don't like the idea of a third party messing with my calendars and contacts. Also, I've had to remove several viruses from computers with Plaxo, and I'm not sure if it in itself is a virus or not..... It certainly is a thorn in my side as is. This is for my personal IMAP server, so I'd prefer a free solution even if it is more difficult to install than a paid version. I mainly need it to just sync my calendar to my Blackberry and Thunderbird and couldn't care less about the contacts.
I've been Googling for things for quite some time now, and haven't really found anything that says that it will work with Blackberry and Thunderbird. They really only give a sense of maybe with nothing really defined. I can put on an Ubuntu server to sync everything? I don't want to leave my computer on all the time, and RIM has yet to come out with something decent to sync Blackberries and Thunderbird properly as far as I know.
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Dec 15, 2009
I want to use imap account settings in MS outlook 2003/2007 with backup end Sendmail server. When i configure imap settings in MS outlook 2007 it shows mails are coming from Sendmail server , but another local Personal folder attched with outlook client. I have changed my settings so that every send items mail are coming under imap send-items folder ,but that extra folder stilli in place. I do not see any option how to remove this extra folder from my PST list.? As this never comes with if we are using MS Exchange.. Is there any way i can change my local delivery bydefault with IMAP folder only and save my Contact in IMAP Folder?
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Jan 19, 2010
How can I download Mail from Dovecot POP3 Server to new Dovecot POP3 Server of all users and will always run every minute. I've tried fetchmail and getmail but only in one user and need to run fetchmail or getmail to retrieve new emails.
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Mar 20, 2010
I have a php app set up in the default virtualhost, and want to add a Grails app. The grails app runs on [URL] and I want to configure apache2 to proxy that folder to Jetty using mod_proxy.
Module is enabled
Code:
$ sudo a2enmod proxy
Module proxy already enabled
[code]....
Quote:
[Sun Mar 21 00:14:56 2010] [warn] proxy: No protocol handler was valid for the URL /mailscan. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. My apache2.conf contains no LoadModule lines, and a2enmod says it's already enabled. Does Ubuntu Desktop (Karmic) use the DSO versions of modules, or did I miss something else? I'm aware I should also use mod_proxy_html to make sure only the "portless" version of the address is outputted, but I can fix that later!
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Jan 25, 2011
I will be relocating to a permanent residence sometime in the next year or two. I've recently begun thinking about the best way to implement a home-based network. It occurred to me that the most elegant solution might be the use of VM technology to eliminate as much hardware and wiring as possible.My thinking is this: Install a multi-core system and configure it to run several VMs, one each for a firewall, a caching proxy server, a mail server, a web server. Additionally, I would like to run 2-4 VMs as remote (RDP)workstations, using diskless workstations to boot the VMs over powerline ethernet.The latest powerline technology (available later this year) will allow multiple devices on a residential circuit operating at near gigabit speed, just like legacy wired networks.
In theory, the above would allow me to consolidate everything but the disklessworkstations on a single server and eliminate all wired (and wireless) connections except the broadband connection to the Internet and the cabling to the nearest power outlets. It appears technically possible, but I'm not sure about the various virtual connections among VMs. In theory, each VM should be able to communicate with the other as if it was on the same network via the server data bus, but what about setting up firewall zones? Any internal I/O bandwidth bottlenecks? Any other potential "gotchas", caveats, issues? (Other than the obvious requirement of having enough CPU and RAM).Any thoughts or observations welcome, especially if they are from real world experience in a VM environment. BTW--in case you're wondering why I'm posting here, it's because I run Debian on all my workstations/servers (running VirtualBox as a VM for Windows XP on one workstation).
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Jul 27, 2011
I have configured router(192.168.1.2) to serve only one machine with IP - '192.168.1.6' and set up SQUID proxy on '192.168.1.6'. I have defined some rules(ACL) regarding connections to internet on SQUID proxy.
I changed the Gateway of rest of machine (192.168.1.60 - 192.168.1.69) from '192.168.1.2' to '192.168.1.6'.
The policies which I defined in SQUID is working properly but 'Linux Evolution mail' client is not fetching mails.
Is I have to do any other settings on 'Linux System' or 'Evolution mail client'.
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Sep 30, 2010
i want to set up an email server both to receive and send emails. I also am on a dynamic ip scheme with my ISP. I do have a dynamic dns account with no-ip.org the Questions are:
-will somebody be able to send emails to me at the <user>@<dyndns_name>.no-ip.org email address?
-will I be able to send emails from the <user>@<dyndns_name>.no-ip.org email address?
I know i'll be able to login to accounts like gmail and yahoo and download emails from there.. but even that i don't know - even macroscopically how its done:
-is it the sendmail deamon that accepts the mail from <me>@gmail.com, <me>@yahoo.com, <me>@<dyndns_name>.no-ip.org?
-is it the sendmail deamon that does the sending of email (as well)?
-can it push emails that I want to send as <me>@gmail.com to the gmail smtp servers (and they in turn will push my email even further)?
-can it push emails from <me>@<dyndns_name>.no-ip.org to receipients?
and finally,
-WILL receiving pop/imap servers allow incoming email from my server? or due to the dynamic ip they'll assume I'm a spam server?
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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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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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Feb 18, 2011
I've had Dovecot up and running for months now without any problems whatsoever. Came in this morning and suddenly I can't connect to it. Thunderbird hangs with "Checking mail server capabilities..." and Windows Mail spits out the following error:
Code:
Cannot establish TLS with IMAP server 10.0.0.2:143, SSL_connect error 336142597
Configuration:
Account: Blah
Server: foo
User name: whatever
[code]....
Thing is, I'm not using TLS/SSL and have changed exactly nothing since the server was set up. I've tried having the mail clients use SSL/TLS in response to the above error, but that changed nothing.
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May 18, 2010
Im new in linux i want to configure my redhat machine as both router and transparent proxy!
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