XF 1.5 Connection to PayPal failed

[CypriotMerks]

How do I fix this issue?
It's not a firewall thing, I have checked.

What else could cause this?

 

[CypriotMerks]

Bump

 

[CypriotMerks]

So can I get help on this or no...?

 

[Paul B]

You will likely need to contact your sysadmin or host.

It's going to be server related.

 

[CypriotMerks]

I've already had two developers take a look and could not find the issue.

 

[TPerry]

I've already had two developers take a look and could not find the issue.

Developers are not necessarily system administrators.
Your hosting provider needs to check to confirm that connectivity between your site (the server it is on or the VPS/server itself) is good.
Could this be an issue with your hosting provider? It isn't scheduled to go into effect until 06/2017 - but may be an issue currently.

To ensure the security of our systems and adhere to industry best practices, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections.

https://www.paypal-knowledge.com/infocenter/index?page=content&id=FAQ1914

If you have shell access, you can confirm connection by the following command

curl https://tlstest.paypal.com

You should see similar to this
PayPal_Connection_OK[15:24]
with the timestamp being different.

Are you using the internal functions or something like BD Paygates add-on?

 

[CypriotMerks]

Developers are not necessarily system administrators.
Your hosting provider needs to check to confirm that connectivity between your site (the server it is on or the VPS/server itself) is good.
Could this be an issue with your hosting provider? It isn't scheduled to go into effect until 06/2017 - but may be an issue currently.

https://www.paypal-knowledge.com/infocenter/index?page=content&id=FAQ1914

If you have shell access, you can confirm connection by the following command

curl https://tlstest.paypal.com

You should see similar to this
PayPal_Connection_OK[15:24]
with the timestamp being different.

Are you using the internal functions or something like BD Paygates add-on?

Yeah, I'm aware. They know Linux extremely well.

curl: (6) Couldn't resolve host 'tlstest.paypal.com'

Not using any add-ons.

 

[CypriotMerks]

I think I may have solved the issue, I am now getting
PayPal_Connection_OK[root@e3-1270v3 ~]#

but when I go to https://www.linkhere.com/payment_callback.php
Connection to PayPal failed

 

[TPerry]

Yeah, I'm aware. They know Linux extremely well.

curl: (6) Couldn't resolve host 'tlstest.paypal.com'

You have some type of DNS lookup error as the "could not resolve host" clearly states. Whether it's permanent or transient is another matter. And if they knew it "extremely well" they should have been able to do a simple test like the above and confirm a connectivity issue.
What DNS servers are configured in your servers /etc/resolv.conf? You may want to change to another DNS server for lookups.
Here is what I use on some of my setups

nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 213.186.33.99