Plesk 12.x / Linux :: IMAP-Server Maximum Number Of Connections
Jan 28, 2015
My Customers and I have Problems connecting to IMAP-Server. By moving through IMAP Folders I get the Massage "Unable to connect to your IMAP server. You may have exceeded the maximum number of connections to this server"
I know this Article: [URL] ... and all the other related to this issue.
I would like to know what is the maximum number of Apache connections a Server can handle? Does this depends on the Config of the Server? Is it Possible for a server to handle more than 2500 Active Apache connections without timeout / connection failure / slowness?
I use APF and APF is working with iptables , when I define a large number of IPs in deny_hosts.rules or allow_hosts.rules and restart the APF , iptables begins to display errors after applying some number of rules , I have set SET_TRIM="0" in APF , so the number of APF rules is unlimited and the error is from iptables.
Is there any setting in iptables config files for maximum number of rules?
Is it unlimited and depends only on system available memory? O/S , ...?
Every time i use Dovecot secure IMAP server with Sieve support.I can not receive emails note. Upgraded from 11.5 to 12
Jun 18 08:03:36 CO6302 postfix/qmgr: 284FAA0E86: from=<firstname.lastname@example.org>, size=1943, nrcpt=1 (queue active) Jun 18 08:03:36 CO6302 postfix-local: postfix-local: email@example.com, firstname.lastname@example.org, dirname=/var/qmail/mailnames Jun 18 08:03:36 CO6302 postfix/pipe: 284FAA0E86: to=<email@example.com>, relay=plesk_virtual, delay=336, delays=335/0.01/0/0.19, dsn=4.3.0, status=deferred (temporary failure. Command output: lda: Error: user firstname.lastname@example.org: Error reading configuration: Invalid settings: postmaster_address setting not given lda: Fatal: Internal error occurred. Refer to server log for more information. 4.2.1 Message can not be delivered at this time )
Since the update I have a problem with my Firewall. I need to set "Allow all incoming connections" under "Server => Firewall" in order to connect over FTP with TLS (explicit). This was working before the update without allowing all incoming connections. How to fix this in the Plesk panel?
Our server is running; Plesk 11.0.9 and CentOS 5.7 it has a Q8200 CPU @ 2.33GHz and 2GB of RAM. Now there are just two websites on the server plus a couple of redirects/forwarding domains, although lots of domains are still on the server but turned off in Plesk. Both websites are OSCommerce sites and I just need to keep these sites going until the end of the year when we will switch to our new Joomla based website.
We have seen an increasing number of server crashes and after various checks of the logs, fitting a new BIOS battery, check of the hardware by EasySpace who host the server, installation of ClamAV, LMD and RKHunter (which did find some Trojans and Suspect software), I have traced it down to some external Http activity that is taking all of my CPU time and RAM. Here is a screen capture of the Htop listing and when I killed these processes the CPU and RAM went back to normal. The problem is that I usually have to restart the HTTPD service and sometimes things get so bad that the server crashes and I have to request a power cycle.
I have this error when i put import to mysql database
Code: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '<script></script><p>ERROR: Maximum execution time of 300 seconds exceeded (Util.' at line 244
I have in domain > doemainname > max_execution_time Standaard Geef een aangepaste waarde op 0
and insert in usr/local/psa/admin/htdocs/domains/databases/phpmyadmin in the file config.sample.inc.php following command $cfg['ExecTimeLimit'] = 70000;
I purchased an ssl certificate and installed it in plesk via server->ssl certificates. I then followed the following guide to set up imap and pop to use my cert (instead of using the default i used my cert into) URL... Now I'm getting an issue with sending emails, something about SSLHandshakeException, and some clients can't even log in. MTs support mentioned this might have something to do with POODLE.
We are using Plesk 11.5 servers with CentOS 6 and Courier-IMAP 4.12. Customers are experiencing several problems when using their IMAP mailbox in Outlook 2013:
Sending mail over SSL (port 465) will fail if SSL certificate does not match the mail.domain.tld setting. Resolution is provided by [URL] ....
IMAP folders (including INBOX) are not listed. Resolution is provided by [URL] ....
Sent items are not stored (nor online, nor offline). TechNet says that SENT and DELETED folders are no longer configurable by design. The only way to get sent items in a folder is by setting up a custom rule and using Visual Basic (!) to mark the messages as read.
My server is Plesk 12 with Postfix and Courier IMAP i am also using Thunderbird as mail client...
My question is when i create a folder from my mail client or webmail they just appear as sub folders of my inbox which is not what i want, i want root level folders not to be under inbox... When i searched for this i found [URL] ....
Is this still the case? Is there anything i can do to have root level folders?
I'm now with a bit of a problem on my server. I tryied to add a new domain and I haven't counted how many domains I had on my server because I was thinking that plesk would warn me if I was reaching my limitation of domains, so I added a new one...
My license was for 10 domains, and now I have 11 domains so I'm getting an error when I enter my plesk panel. The error basically says that I exceeded the number of domains of my license so I have to buy a new one.
The problem is that when I want to click on the cancel operation button on the bottom of the page I'm constantly being logged out and I cannot cancel the operation, so I'm in a loop right now: "Log in -> get error -> Cancel -> Automatic log out -> Log in"
What can I do to delete one domain completely from my server?