Hello!

Faced with the problem of not working external connection to 1 of the many sites on the account on the hosting (i.e. on all the sites everything is fine, but only 1 problem).

1. When loading in the browser page-nodes (done from the admin area of Drupal CMS 7.54) with the following php code:
<strong><?php print_r(drupal_http_request('https://updates.drupal.org/')); ?></strong>

the following text is displayed:

stdClass Object ( [code] => -61 [error] => Connection refused )

2. If the root of the site to make a php file with code:
<strong><?php include_once "includes/common.inc"; include_once 'includes/bootstrap.inc'; print_r(drupal_http_request('https://updates.drupal.org/')); ?></strong>
and load in browser, it displays the following text:

stdClass Object ( [request] => GET / HTTP/1.0 User-Agent: Drupal (+http://drupal.org/) Host: updates.drupal.org [data] =>
Hi there!

If you can see this your IP is not blocked.

[protocol] => HTTP/1.1 [status_message] => OK [headers] => Array ( [server] => nginx/1.10.2 [content-type] => text/html [last-modified] => Thu, 17 Nov 2016 23:07:38 GMT [etag] => "582e383a-88" [via] => 1.1 varnish [fastly-
debug-digest] => 1b5b6c73c705ac5916a3ed30e9c26a659ed44a30a3695c41837e0395709a2772 [content-length] => 136 [accept-ranges] => bytes [date] => Sat, 18 Feb 2017 09:17:35 GMT [age] => 5326958 [connection] => close [x-
served-by] => cache-sea1922-SEA, cache-ams4146-AMS [x-cache] => HIT, HIT [x-cache-hits] => 4, 1 [x-timer] => S1487409455.257627,VS0,VE0 ) [code] => 200 )

=================
1.Evidence is not working external connection to https://updates.drupal.org/
2.Evidence of working with external connection https://updates.drupal.org/

So the hoster claims that the external connections at the level of the hosting for the site is not blocked and the problem is in Drupal.
Drupal recently updated to the latest 7.54 (7.53 in the previous problem also existed).

Tell me how to solve the problem of outer joins, which does not work updating modules, translation does not work uploading the weather (weather module)?

p.s. I think the problem appeared after I update/install modules: boost, advagg, advagg_mod, but after disabling them did not dare.

Thank you.