Temporarily rejected connection in “connect” ACL: “Host is ratelimited due to multiple failure only connections”

Things to do when this happens:

Add any outside SMTP servers (example: spam filtering systems) and MX record to the Backup MX Hosts due to ratelimits.

Make sure Local Mail Exchanger is been set correctly.

Add MX IPs under the WHM >>> Exim Configuration Manager >>> “Sender verification bypass IP addresses”  and “Trusted SMTP IP addresses”

IPs  whitelisted under the server csf firewall.

550 Not permitted to relay thru this server without authentication

Try disabling, and then enabling SMTP restrictions


Home »Security Center »SMTP Restrictions

535 Incorrect Authentication Data

Check the following

  • weak SSL/TLS setting to off
  • Expired password.  Reset password and/or turn off this policy.

Rebuild aliases on Centos

exim_dbmbuild /etc/aliases /etc/aliases.db

Setup Angular 4 development

Install node js:

cd /usr/local/src
#wget[version number here]/node-v[version number here].tar.gz
#tar -zxvf node-v[version number here].tar.gz
#cd node-v[version number here]
#./configure –prefix=/usr/local
#make install

if GCC version error:

sudo curl > /etc/yum.repos.d/slc6-scl.repo
sudo yum install –nogpgcheck -y devtoolset-3

point at new gcc
scl enable devtoolset-3 ‘bash’


Devtoolset is located at /opt/rh

Determine which PHP script is emailing on Unix

1. create /var/log/phpmail.log
2. edit /usr/local/lib/php.ini
mail.add_x_header = On
mail.log = /var/log/phpmail.log

Cannot share in Windows 10 Workgroup environment

Try the following:

In Services, standard tab, check that the following are started, and automatic
. DNS Client
. Functional Discovery Resource
. SSD Discovery
. UPnP Device Host

Make sure devices have static IP’s. Use netcfg -d to reset the network. When doing this, go thru and reset the tcp/ip settings. Use no spaces, caps for device name.

Bulk remove blank lines

Click CTRL + F
Select “Current document” in “Find in” (You can also select the folder if you have multiple files)
Search in “Source code”
Tick “Use regular expression”
Type “[\r\n]{2,}” (without quotes) in “Find”
Type “\n” (without quotes) in “Replace”
Press “Replace All”

How to access non-wordpress subfolder

Add at the beginning of the .htaccess file:

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_URI} ^/subdirectoryname1/(.*)$ [OR]
RewriteCond %{REQUEST_URI} ^/subdirectoryname2/(.*)$ [OR]
RewriteRule ^.*$ – [L]

Cannot Send or Receive Email

Check your email settings:

POP3:  Incoming and Outgoing server:  mail.[YOURDOMAIN].com

Username is your full email address, lowercase.  Password is as provided to you.  Outgoing server requires authentication.  Do not use SSL unless you have your own SSL Certificate.

Cannot Send Email

If it is only a sending problem, check the outgoing server port number.  If it is 25, try setting it to 587.

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