Mailing lists that have multiple from names but only one address have wrong names shown.

Example - Apache JIRA notifications

When you view message source, it says, for example:

From: "Hive QA (JIRA)" <*** Email address is removed for privacy ***>

Whereas the message everywhere would show e.g. "Andrey Stepachev (JIRA)", which is a From name from some other message sent by the same address.

Moreover, the name is not even a contact - it changes randomly. About half (or significant fraction, anyway) of the messages have correct name shown, and half have random incorrect name drawn from the set of all names used by this sender.