Colon (":") at senders' names breaks addresses

[lwcorp]

One of the services that send me messages uses a colon in their sender's name, and turns out Spamgourmet doesn't support it. I've also confirmed this by changing of my own addresses to have a colon in its sender's name, and then the same thing happened.

Normally when someone sends you a message, Spamgourmet customizes the incoming's address to be:

From: "Sender's name - Sender's address" <reply address masking>

But if the sender's name looks like Before:This then Spamgourmet converts it to:

From: Before -
<reply address masking>

So as you can see:

1. The sender's address is censored - I don't know who sent me this message!
2. The part after the colon (the word This) is censored - it just looks weird
3. A line break is added

Point 1 means if I want to add this sender as an exclusive sender, I can't.
My successful temporary solution was to add ^$ (blank sender in regex) as the exclusive sender.

P.S.
When inspecting such messages' full headers, you can find envelope-from <actual sender's address>, so at least there's a way to find the sender's actual address, but still not to use it as an exclusive sender.
In any case it's not ideal.

https://bbs.spamgourmet.com/viewtopic.php?t=1898