Ubuntu Servers :: Dovecot - Outlook - POP3 - Extremely Slow Receiving?
Jul 11, 2011
recently I've replaced an old windows mailserver with a new one running 10.04 LTS (postfix - dovecot) but I got a strange problem with MS Outlook 2003 and 2007 on Win XP. These MUAs receive new messages extremely slow. Some of messages are received repeatedly. All I found in /var/log/mail.log is login and then (after 1 minute) disconnection for inactivity. No errors.:
Jul 11 10:36:51 dovecot: pop3-login: Login: user=(user@domain.org), method=NTLM, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx Jul 11 10:37:07 dovecot: POP3(user@domain.org): Disconnected for inactivity top=0/0, retr=1/5434, del=0/12, size=954793 nothing more. And outlooks wait and wait reporting "receiving". What they are waiting for? Is there something dovecot should send them?
At the same time Mozilla Thunderbird and Opera Mail on the same network with the same setup don't have any problems. I just don't get it. Does anyone know what to do to get it work please?
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Aug 15, 2010
I have recently set up a mail system using Postfix, Dovecot, Spamassasin, ClamAV and atMail - I'm new at this, so proud of myself to have gotten this far. I have required secure authetication for both sending through SMTP and access via POP3 and IMAP. All seems to work properly. I have tested POP3 with KMail and Evolution and everything works great. The only problem is I cannot get Outlook 2007 to authenticate for POP3. I can send through SMTP with secure authentication from Outlook, but no matter what I try I cannot get it to authenticate for POP3 access. Checking SPA in Outlook causes it to repeatedly ask for credentials which it does not accept, while un-checking it causes the client to be immediately rejected by the server.
I have turned on all the various relevant client work-around options in Dovecot and Postfix (that I am aware of) and I have hunted through the web to see what I can find, but no luck.
Besides using the listed client work-arounds in the Dovecot config file, can anyone shed light on what else I might need to do to get Outlook 07 working with POP3?
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Apr 16, 2010
For long-term migration from courier to dovecot I would like to install courier-pop and dovecot-pop3d simultaneously. Aptitude offers me to install one, by removing the other, only. Can this be done without creating problems for the package manager and future upgrades? And why if not?
The following NEW packages will be installed:
The following actions will resolve these dependencies:
Remove the following packages:
Score is -170
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Apr 28, 2009
I have recently set up a mail server running dovecot and everything is fine. However, I now want to retrieve the contents of 2 pop mail boxes and insert them into the IMAP structure under dovecot. I need to check for spam and sort them according to sender and recipient.
What is my best software option for retrieving the mail?
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Jan 27, 2011
I've got Ubuntu Server 10.04 on a fairly beefy box (quad-core xeon 2.67ghz, 2gb ram) Standard mysql-server installed, with many databases.Lately, mysql has been extremely slow and almost non-responsive. Server loads are low.Running mtop reveals many, many processes from the user: debian-sys-maint querying the information_schema table with the exact same query, over and over."Select count(*) from tables where engine = 'innodb'"
This is adversely affecting my database server, and thus my websites which rely on mysql. Every search I've done looking for more information about the debian-sys-maint user shows problems where that users was deleted. The user isn't deleted.
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Mar 4, 2011
im experienceing issues with DANsGuardian speeds being extremely slow. Basically - I have Squid up and running perfectly, when i change the ports from DG to the standard proxy i have full internet speeds, but as soon as i run DANsGuardian, it takes about 1 minute to load a page :/ Any ideas on what could be causing this?
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Nov 1, 2010
1. When I'm not logged into the server, only the shares are visible on my Windows computer. Clicking on the share folder displays an error message. As soon as I log in at the server, the files within the shares become accessible on the Windows box.
2. File transfers between the machines are extremely slow. Watching the system monitor, there's a brief burst of network activity followed by 10-30 seconds of nothing...on a gigabit network, the effective transfer rate is ~120kbs. There's no other network activity going on that would account for this behavior.
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Jul 4, 2010
I believe I have everything but this setup, as when I use my Outlook's Test Account Setting, it's able to do the following:
1) Send a test e-mail
2) Connect to POP3
3) See the actual test e-mail at /var/spool/mail/<username>
However, the Test Account Setting wasn't able to authenticate to POP3. I then do the following:
1) Start up Command Prompt.
2) Execute "telnet <server IP> 110". It gives me "+OK Dovecot ready".
3) Type "user <username>"
4) Type "pass <password>". It gives me "-ERR Authentication failed".
Then I searched around and found this. However, I'm not sure if I am able to make any sense out of it.
My CentOS 5.5 is setup with the following standard files:
/etc/passwd (password field contains the character "x")
/etc/shadow (examining this reveals it's using MD5 has as the password field begins with $1$)
So how should I set my /etc/dovecot.conf? I think it's this file I need to setup to enable POP3 authentication?
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Nov 26, 2009
When I log in with shell It connects and reads the SSL on port 993. The problem is when I use SSL for the email client it gets the error on the email side and it doesn't work. Out going mail on the postfix works, and also incoming and outgoing on my actual server works. I have one email set up there for testing. I am really confused. This is not a self signed SSL either. I tried to create a dovecot.pem but it won't work. How do I create the dovecot.pem for a non-self signed SSL?
here is the path:
ssl_cert_file = /path/to/mail_domain_com.crt
ssl_key_file = /path/to/private/mail.domain.com.key
It should be:
ssl_cert_file = /path/to/dovecot/certs/dovecot.pem
ssl_key_file = /path/to/dovecot/certs/private/dovecot.pem
When I try to use the mkcert.sh it doesn't put the files in the places it should go. I did edit both the mkcert.sh and the dovecot-openssl.cnf.
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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>]
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Jan 22, 2011
I have followed the guide for "The Perfect Server - Debian Lenny (Debian 5.0) With BIND & Dovecot [ISPConfig 3]" and all is well, except.
I can send mail (to GMail) from commandline. I can send mail (to GMail) from any of the domains configured in ISPConfig3 through SquirrelMail (how ever terrible that looks, but functions) or IMAP/POP.
but....
I can't receive mail (from GMail) on any of the domains configured in ISPConfig3 in SquirrelMail or IMAP/POP.
I have my domains configured with proper MX records (just like I have them configured at work). I have all ports (80, 143, 110, 25, 22, etc) forwarded on my router that are needed.
I can Telnet to localhost and all checks are fine. I can send and receive from and to local domains on the same server, which makes sense. but
I can't Telnet from any external server to my server behind NAT.
Conclusion:
I figured it MUST be a network/port-forwarding problem as the external Telnet requests fails to my machine on port 25.
Tested my router if it would let met communicate through port 25 and it would.
So it must be my ISP, as I read in different posts.
Question:
Maybe I'm a n00b, but in all other posts the problems were with receiving AND sending.
My ISP responded that port 25 is blocked because of spam issues.
But I can mail (and even spam if I would like to) to external domains while I didn't do anything weird to make that happen.
The only thing I wish for is to receive mails and if you'd ask me, port 25 would be solely for outgoing mails, not for incoming mail deliveries throught MX?
An ISP surely wouldn't disable their customers in having a mail-server for incoming mails, as long as they would send out through their own smtp server to make sure they wouldn't spam the world?
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Feb 10, 2011
I've set up Ubuntu 9.04 (desktop) at home in a lab environment (workgroup rather than domain) and have configured Squid. Everything works fine but, when I took it to the next level and made the proxy transparent, my problems began. I can still access sites (having pointed the XP Pro client to the squid box as the DG) and the sites are logged in /var/log/squid/access.log but I am unable to use Outlook to access my SMTP and POP3. I guess that the setup is blocking ports 25 and 110 and I'll need to configure iptables to forward packets destined for these ports directly to the "real" DG, rather than the Squid box. Here's the set up:
A single NIC (eth0) on 172.19.0.250 / 16 (static) ADSL router ("real" DG) on 172.19.0.1 I executed iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128 My squid.conf:
Code:
acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl localnet src 10.0.0.0/8# RFC1918 possible internal network
acl localnet src 172.16.0.0/12# RFC1918 possible internal network
acl mynet src 172.19.0.0/16
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Sep 11, 2009
I am trying to prepare procedures for email restoration following a file system loss that contained user Maildir directories. Assuming that my most recent backup is earlier than the last time that many users received and downloaded email, the restored mail directories will not contain messages that were previously received and downloaded to clients following the backup and preceding the crash. This is not a problem in itself, however, it does appear to cause problems for the email clients.
My desire would be for email clients (outlook, outlook express, thunderbird) to properly recognize the messages that currently exist on the server, ignore previously downloaded messages and download newly arriving messages.The behavior that I am seeing is that the email client fails to recognize that any new messages exist and fails to download any messages at all. By removing the dovecot.index... files and the uidlist file, the clients will download ALL messages that are present in the "new" and "cur" directories even if previously downloaded. This is also an undesirable outcome.
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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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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 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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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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Apr 11, 2010
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I'm using POP3/SMTP for most email (I've a low-usage IMAP account with gmx.com too), but it seems like some sort of issue where I'd want to optimise or "defragment" my local mail store.Has anyone any ideas or suggestions on this?My ~/.evolution/mail folder contains about 2.5Gb if that's any help.This is with 9.10 Ubuntu; I have done some basic tuning on the setup, but not a lot.
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May 1, 2010
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Jun 12, 2010
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