To replicate, find a Mailchimp email newsletter that can be viewed via the web. Here are a few examples:
Code: Select all
Copy the link provided by the RSS button, use it to subscribe via Vienna: File → New Subscription…[⌘N] → Subscribe. The issue persists even when manually refreshing, either via File → Refresh All Subscriptions [⌘R] or File → Refresh Selected Subscriptions [⇧⌘R]. The Activity Window [⌘0] gives the following message:
Error retrieving RSS feed: Could not connect to the server.
This only started happening after 20 June 2020 and I had no issues before, since I first started using Vienna (Version 3.5.5, installed 12 March 2020).
W3C’s Feed Validation Service successfully validates Mailchimp feeds, with some recommendations. Here are the validation results of the first example newsletter.