Post by John DresslarD: Thanks for replying. I am not a power user, so I'm not sure what you mean by making TLS 1.2 connections. I just have the standard paid, final (7.1.0/9) stock version of Eudora. I read a little something about Hermes, but my impression was that it is a standalone program - albeit based upon the original Eudora platform. Weird that (a) gmail (and only gmail) suddenly started flagging and blocking my emails, and (b) no one else seems to have encountered this problem. It's driving me nuts, as whenever I have to send an email to a group of recipients - no matter how small the group may be - I have to send two emails (i.e., I have to go to my ISP's web-based, clunky email "program" to send the email again to gmail recipients). How would this Hermes thingy work and would it possibly re-insert the missing "messageID header"?
TLS 1.2 minimum is now needed for connection to most mail servers. Eudora natively only has TLS 1.0.
The Hermes update adds 1.2 to Eudora, and you should install it, or you will inevitably have connection problems, in the future if not yet.
It's available here -
https://sourceforge.net/projects/hermesmail/
If you select the 'files' tab, there are two options.
The first is hermsetup.exe.
This is a complete installation of the version of Eudora you already have, with the updated Hermes files.
If you run it, it should find your existing installation and offer you options.
For it to work properly, you need to select to do a new installation, not an update!
Follow the prompts, and it will update things.
Your mail data should not be affected and everything should be exactly as before, but back everything up first just in case!
The other option is to download HermSSL.zip.
This file contains just the updated files, and after extracting them they should be copied to the Eudora program files folder, over-writing the originals.
Don't do this with Eudora running of course!
There is a Microsoft installer file included to put some support files on your system, but you probably have them already.
If you run the installer and it shows an error message, you already have the files and you can just close the message.
Once you've installed the files, you can check if it's worked by downloading some messages, and then looking at the properties of the persona you used to do the download. Under the 'Incoming Mail' tab, click on the 'Last SSL Info' button.
In the 'SSL Version' box it should now say 'TLSv1.2'.
Good luck!