Plesk 12.x / Linux :: Warning - Reverse DNS Does Not Match SMTP Banner
Jul 17, 2014
OS = CentOS 6.5 (Final)
Plesk version = 12.0.18 Update #7, last updated at July 11, 2014 12:46 PM
I have been trying to make my sites better suited to anti spam measures. The only warning I have left to work out is:
Warning - Reverse DNS does not match SMTP Banner
In the Plesk settings i do have the outgoing mail setting set to Send from domain IP addresses and use domain names in SMTP greeting - still I get the warning.
I am using Post fix. This is a 1and1 dedicated server and I am using custom name servers for this domain. I believe the smtp banner is matching the main ip and not the domain.
Now with Plesk 12 (and I suppose all previous versions) we can't change the SMTP banner to something other than the hostname.But If server host different IPs with different domains,only the primary IP do not have problems for email delivability all other domains are marked spam.This is a critical issue for email deliverability. Very critical issue that should be solved asap.the only solution that we found with our systemists is to remove Plesk, but sure it's not what I would like to do.
I use PLESK 11 on one of my servers, and use NS.mydomain & NS1.mydomain, everything works fine, DNS Zones are OK, reverse DNS is OK...
Except on MXTOOLBOX this :
SMTP Valid Hostname > Reverse DNS is not a valid Hostname SMTP Reverse > DNS Mismatch OK - 195.154.XXX.XXX resolves to mydomain.eu SMTP Banner Check > OK - Reverse DNS matches SMTP Banner
Tried so many searches on Google, but no response and always 3 same pages from MXTOOLBOX.
I migrated IP of this server in datacenter, because they ask us to do it, so in /etc/hosts for example I found old IP, I changed it, restart network interface, but always the same thing... postfix too (changed IP and restart).
Being relatively new to the Linux world, I don't exactly know why my reverse proxy settings are not working. Nothing i have tried has worked.
The code below is from my old windows server what does not seem to be working in my new 1&1 vps server. I have the below code at the moment at the bottom of my httpd_ip_defult.conf file under /var/www/vhosts/system/mydomain.com/conf/
The following errors also show up in my vhosts error log:
Code:
[Sun Oct 12 23:30:56 2014] [error] (70007)The timeout specified has expired: proxy: HTTP: attempt to connect to xxx.xxx.xxx.xxx:8008 (xxx.xxx.xxx.xxx) failed [Sun Oct 12 23:30:56 2014] [error] ap_proxy_connect_backend disabling worker for (xxx.xxx.xxx.xxx) I also have mod_proxy.so , mod_proxy_http.so and mod_proxy_html.so all enabled in my main httpd.conf file at /etc/httpd/conf/
Basically, I need to fix this urgently as a core feature of my site relies on this setup.
With enabled nginx I'm unable to contact web pages via TLSv1.1 and TLSv1.2. When nginx is disabled and the pages are handled by Apache everything is fine. But only when nginx is completely deactivated. It's not enough to disable "Smart static files processing" at the "Web Server Settings for sub.domain.tld".
I tried to add "ssl_protocols TLSv1.1 TLSv1.2;" at "Additional nginx directives" at the Web Server Settings, without effect.
I think i have to modify /etc/nginx/plesk.conf.d/server.conf but this file is generated by Plesk.
When I click upgrade now at the plesk panel I get following error:
Parallels Panel pre-upgrade check... WARNING: The proftpd FTP service will fail to start in case the support for IPv6 is disabled on the server. Please check [URL] .... for details.
Is it safe to proceed? I guess it shall be automatically?
When accessing a backup in backup-manager in a user subscription via a reverse proxy (eg. plesk panel is called as localhost:8443) I get following error:
Internal error: Failed to exec pmm-ras: (array ( 'code' => 127, 'stdout' => 'Transport error: File 'clients' not found ', 'stderr' => '', )). Message Failed to exec pmm-ras: (array ( 'code' => 127, 'stdout' => 'Transport error: File 'clients' not found ', 'stderr' => '', )). File Connector.php Line 227 Type PleskPMMResponseException
This happens when I try to download the backup and also when clicking on the backup name. These are the apache settings for the reverseproxy domain:
SSLProxyEngine On AllowEncodedSlashes On <Location /> ProxyPass https://localhost:8443/ ProxyPassReverse https://localhost:8443/ </Location>
I'm using this script as a cron to generate DKIM keys for the domains I have. It's an easy script. And it does it's job just OK. I have the necessary software installed and configured.
The way it works is:
The script check if the domain in queue has a record for it. If it doesn't, OpenDKIM generates a one time DKIM record for mail._domainkey that I am entering to my dns records for all the domains I have.
After creating the DKIM record, it checks and deletes mail._domainkey records if there's any. Then adds the generated DKIM to plesk dns zones and disables/enables greylisting to create the appropriate dns entry.
If it does have a DKIM recors on the hdd already, then it removes
mail._domainkeyand TXT o=-entries.
After that it basically adds the already generated DKIM record and it disables/enables the greylisting for each domain in order to recreate "TXT o=-"
Up till here, it works fine. I can see these entries when I check the DNS Settings. They are there.
But whenever I run this script either via cron or manually, I get an error message on my panel: (You can check the screenshot as well)
Code:
Warning: The DNS zone was modified. If you would like to apply DNS template changes to this zone, either click the 'Apply DNS Template Changes' button on this page or choose the 'Apply the changes to all zones' option in Server Administration Panel > Tools & Settings > DNS Template Settings > Apply DNS Template Changes.
And unless I manually click "Apply DNS Template Changes" for EVERY SITE it doesn't go away.
So, I was wondering, is there a way to scriptize that command? Or how to prevent it?
This is the command I use to generate DKIM and add it to Plesk database, also if any such record exists, delete and re-write it:
I have some problem with my parse_url after last update of Plesk Panel.I ran the test script on my server and on my local computer, and received the following result: Local computer:
HTML: Array ( [host] => product_features.clear_list?redirect_url=http [path] => //www.siteExample.com ) As you can see, the structure of the output data is not identical as it should be.
I was running on a Ubuntu 10.04 LTS VPS and had this error too, then yesterday imported the domain from the old VPS to our new Plesk Server (Ubuntu 12.04.3 LTS) and I still get this error on this one domain.
This is the error in question...
Warning:hosting "mydomain.tld"
Failed to pack files Backup_mydomain.tld_user-data_1311120042 in /var/lib/psa/dumps/domains/mydomain.tld [ 49562925056 bytes free of 53687091200 bytes total on mount point 0]
Warning:hosting "mydomain.tld"
For security reason backup is performed on behalf of subscription system user. System user has no read access to backup file.Click to expand...
we are getting the following error message during our scheduled backup..Warning: mysql "wordpress_9"...Not all the data was backed up into /mnt/backup/web03/domains/domain.com.au/databases/wordpress_9_1 successfully. Use of chdir('') or chdir(undef) as chdir() is deprecated at /opt/psa/PMM/agents/shared/Storage/Bundle.pm line 39.
mysqldump: Error 2013: Lost connection to MySQL server during query when dumping table `backupdb_wp_commentmeta` at row: 717
I have a server with openSuSE 13.1 and Plesk 12.0.18#7 and get following Warnings:
Warning: phpinfo(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /srv/www/vhosts
Warning: getdate(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /srv/www/vhosts/s535829144.online.de/httpdocs/contenido/includes/pseudo-cron.inc.php on line 306
I set php.ini from UTC to Europe/Berlin and restart the Server, thats no Effect.
For some reason one of my customers email accounts seems to have been hacked. My admin account continues to say that the customer has reach over the 30 emails per hour limit. This is the email error:
following customers' domains, mailboxes and subscriptions are reached their limits for outgoing emails for the period:>From Dec/13/2014 05:47. To Dec/ 13/ 2014 06:47
Subscriptions customerdomain.com, the limit is 100 messages per hour 336 attempt(s) to exceed limits from Dec/13/2014 04:31 to Dec/13/2014 05:47
So far it has sent over 5,000 attempted in the past few hours. The customer used gmail to send from domain before, so I've changed their gmail email password. I've also changed the main email password, and the plesk username and password login for the customer. It still continues
Updating: selinux-policy-targeted-3.7.19-260.el6.noarch 128/373 libsemanage.semanage_direct_commit: WARNING: genhomedircon is disabled. See /etc/selinux/semanage.conf if you need to enable it. /etc/selinux/targeted/contexts/files/file_contexts: Invalid argument libsemanage.semanage_install_active: setfiles returned error code 1. semodule: Failed!Click to expand...
I am using Plesk Panel 11.0.9 (latest updates applied) on CentOS 6.4. at Strato. Unfortunately I can not send email from outside of the server (thunderbird). As I am not familiar wwith mail server configuration at all I would expect that plesk panel does that for me (right?)
* I can send emails via web mail. * I can receive emails in thunderbird, but sending runs into a timeout. * The plesk firewall configuration does have a rule for smtp (but I don't see for which port), so I would expect it is not a firewall issue * I would like to send with some security (starttls and encrypted password), but sending does currently also not work with any combination of (non-)security setting.
My domain has been migrated from another provider, I added it myself via Plesk panel later. The only mail-related change I did without plesk panel was to copy the mailboxes from my old server to /var/qmail/mailnames. But this should not effect sending email...
I am having trouble with setting up an email account to set up the email I go to Mail > Create Email Address > and enter email address (info@example.com) and check the "access to control panel" and create a password and also check "mailbox" .
But in the email client, when I go to use SMTP and I enter the following info:
- SMTP Server: example.com - username: info@example.com - password: password I created above - port 25 - user TLS
I get this error: Your other email provider is responding too slowly. Please try again later, or contact the administrator of your other domain for further information.
I want to add a new port for SMTP (1024) as a client's ISP block 25, 587 and 2525. I tried following this guide: [URL] ... but it doesn't work with Parallels Plesk Panel 11.5 ...
How to add an additional SMTP port to Qmail in Plesk 11.5?
We are seeing intermittent slow responses from SMTP on a RHEL6 server running Qmail on Plesk 11.5. The response is being measured from a remote Zabbix server.
The response time seems to be slow (>10s) for a period of 2-3 minutes and then returns to normal (<1s). All other services continue to be ok during the period of slowness.
The server_args line in /etc/xinetd.d/smtp_psa already contains "-Rt0" and all the DNS servers in /etc/resolv.conf are resolving properly.
From looking at the maillog file the server was receiving about 35 SMTP connections a minute at the time of the slowdown. We have the server configured to use 2 x RBL's.
I wonder if we are hitting a limit on the maximum amount of SMTP connections. The file /var/qmail/control/concurrencyincoming does not exist so, according to the Qmail manual, there shouldn't be a limit on the number of incoming SMTP connections.
I use postfix/smtp plesk12 centos7, I create mailbox add password. For example my domain is a.com from roundcube all work no problem.
My script isn't working look like this:
SMTP CONFIGURATION (LEAVE DEFAULT IF YOU USE mail() ) SMTP HOST smtp.a.com SMTP PORT 587 SMTP Secure tls SMTP Auth true SMTP USERNAME test@a.com SMTP PASSWORD my password
And the script dont send emails to user, say that Mailer Error: SMTP connect() failed. In dns settings I don't have smtpa.com host only have mail.a.com why from scripts don't send email to users?
