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Why are hotmail.com emails blocked by postgrey even though it is whitelisted?

Lately, I received emails from a customer something like 12 hours later...

So I checked closer and could see that the email was from hotmail.com.

Great.

On the server, I edited my whitelist to see what was going on:

vim /etc/postgrey/whitelist_clients.local

Searching the list I could see hotmail.com, so why is it that it gets bounced with a 450 by Postgrey if it is whitelisted?

Looking closer at the logs left behind by Postgrey, I found this line:

Apr 23 06:33:34 m2osw postgrey[1742]: action=greylist,
      reason=new,
      client_name=<secret>.outlook.com,
      ...

SugarCRM Community Edition for Ubuntu 16.04 with PHP 7

As I wanted to use SugarCRM on my new server, I looked into the Community Edition and apparently the company is not willing to convert their code so it works under PHP 7.

So that would not work on a newer system because the code uses quite a few forbidden mechanism (wrong class definitions, old defunct functions...) and that prevents to even instal the system on your machine.

Now, I have looked closer into it and I am getting a version that works pretty darn well already. I still have some issues here and there, but I think you can already make use of that version. Except for one thing which ...

Cannot connect my Host system to Cassandra running on my Guest VM

I found a different way which is to use the:
Local Network or Host-only Network on your Virtual Machine

Today I did my first full install of Snap on a VM in my Ubuntu development system that runs VirtualBox.

This took me about 1h between getting all the files ready from our own APT repository, and then finding out all the setups needed (we have a few working installations, but we added all the necessary magic with time and did not clearly document all the steps yet... argh! so much to do!)

At some point, I wanted to setup the "domains" and "websites" tables on the VM. ...

Using non-default private key for Launchpad

As I was looking around for the way to specify the correct key for launchpad, I could not find it. Luckily the ssh process is running when it asks for the passphrase so I could see the URL used to access the launchpad server from Bazaar. It is:

bazaar.launchpad.net

The address is not visible by default because you use the lp: protocol instead of a full URI to access launchpad.

  Host bazaar.launchpad.net
    HostName bazaar.launchpad.net
    User <your launchpad username>
    PasswordAuthentication no
    HostbasedAuthentication no
    IdentitiesOnly yes
    IdentityFile ...

Useful online network tools

I'm starting this page and hope to think about it again at a later time when I find additional tools... but as I have network problems I often need these types of services to make sure I can get the information I need.

For more Network stuff, click on the Network tag!

What is your IP address?

Check your current IP address from your browser:

http://alexis.m2osw.com/nvg510/my-ip.php [Super clean version!]

https://www.whatismyip.com/ [More advance and with ads...]

What is my DNS?

This one is for people who setup a DNS to make sure that it can accessed from all over the world. It ...

Apache log says: client denied by server configuration

I work with Apache a lot. It is a really good web server that has many options and features. Unfortunately, maybe it has too many of them!

I ran in a problem where a notification from one server to another would fail with the following error:

[Fri Oct 11 19:43:50 2013] [error] [client 162.226.130.121] client denied by server configuration: <path to file>

Looking at the error, I was first thinking that my script was generating the error. The fact is that my script does not generate error 403. It has a 400 and 500 but not 403.

So looking at the error I thought, maybe that's an ...

Setting up my home server with the NVG510 router on AT&T Uverse

My Rant

I got a new router as AT&T forced me to a new product called U-Verse. They are actually forcing all their users to switch to that new systems as the new optic cables are now installed and they probably have a goal to turn off their old infrastructure soon.

The old router I had would generate a gateway on their side. The router was just a router ...

A C++ implementation of a UDP client/server

I have noticed that quite a few people were trying to create UDP communication and I thought that proposing my class could help them. This is very basic as it does not define anything such as the size of a packet or any protocol to ensure arrival of the packets. However, it can be useful if you want to send a signal from one process to another, which is exactly how I use this implementation.

This code is part of the Snap! C++ implementation. It can be found in the corresponding SourceForge.net repository.

Header file:

// UDP Client Server -- send/receive UDP packets
// Copyright (C) 2013 ...

Installing a Nook on my Static IP Network

Barnes and Noble Nook (Electronic device to read books anywhere!)Introduction

Today I was requested by my wife to make her Nook work on our wireless network (she usually can use our neighbors but the connection drops all the time.)

The Nook makes use of DHCP only. So on my static IP address only network, it's kinda not going to work as is! (I must have static IP addresses for security so I can setup a strong firewall.)

So I had to go through a few hoops as follow to get everything to work. Interestingly enough I have not found another website that was talking about such things and their solutions on Linux.

Oh! Wait! Nookers are probably not Linux ...

Too many authentication failures for <username>

Today I tried to make use of sftp to transfer a website to SourceForge.net. Unfortunately, it kept giving me an error:

Received disconnect from <IP address>: 2: Too many authentication failures for <username>

I looked around why that would happen and could not really find anything decisive... until I found an issue in the trac system that SourceForge.net uses. That issue mentioned the fact that the ssh-agent could be the culprit.

It was. Somehow the ssh-agent was sending key after key after key... exhausting the number of keys that SourceForget.net will accept and thus made it

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