muskosan

Thanks for the response, and understood on debugging in the past.

I did run the cURL via SSH on my hosting server, and it does connect. Here’s what it comes back with:

*   Trying 69.192.40.21...
* Connected to us1.api.mailchimp.com (69.192.40.21) port 443 (#0)
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* NPN, negotiated HTTP1.1
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Unknown (67):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* Server certificate:
* 	 subject: C=US; ST=Georgia; L=Atlanta; O=The Rocket Science Group, LLC; OU=IT; CN=*.api.mailchimp.com
* 	 start date: Mar  8 00:00:00 2017 GMT
* 	 expire date: Jun  7 23:59:59 2018 GMT
* 	 subjectAltName: us1.api.mailchimp.com matched
* 	 issuer: C=US; O=GeoTrust Inc.; CN=GeoTrust SSL CA - G3
* 	 SSL certificate verify ok.
> GET /3.0/?apikey=[____REDACTED____]-us10 HTTP/1.1
> Host: us1.api.mailchimp.com
> User-Agent: curl/7.45.0
> Accept: */*
> 
< HTTP/1.1 403 Forbidden
< Server: openresty
< Content-Type: application/problem+json; charset=utf-8
< Content-Length: 210
< X-Request-Id: 040b22f7-e6f0-4903-b751-7fb66495acbf
< Link: <https://us1.api.mailchimp.com/schema/3.0/ProblemDetailDocument.json>; rel="describedBy"
< Date: Wed, 28 Jun 2017 18:37:10 GMT
< Connection: keep-alive
< Set-Cookie: _AVESTA_ENVIRONMENT=prod; path=/
< 
* Connection #0 to host us1.api.mailchimp.com left intact

I’m hosted by Dreamhost.

I confirmed out host IP with Akamai – that it is not blacklisted.

Mailchimp.com account has zero API calls in the last 5 days.

MC4WP Other > has a ton of ERROR: Form 1274 > MailChimp API error: 503 Service Unavailable.

Thanks for the response Harish.

As mentioned above ^ I’ve gone through every step in the connectivity-issues guide with no avail. I’ve confirmed connection via cURL, and cURL -v is > 7.35.

I’m in communications with Akamai to see if I’ve been banned on some obscure list.

I’ll reach out to MailChimp to see if they are blocking my IP one more time… though that wouldn’t make sense if I can cURL in via SSH.

Maybe I should open another ticket for this … but using the Most up to date Free version of the plugin, the Plugin tells me

‘MailChimp returned the following error:
Service Unavailable.’