I was hoping someone could please help me with a problem I'm getting in Thunderbird ever since I set up POP on iPhone. Now, whenever I try to access my POP email from Thunderbird, I get the following cryptic error message:
I've tried again in a few minutes, hours, etc., and I always get this message now. Any thoughts?
Sending of password did not succeed. Mail server mail.domain.com responded: Mailbox is locked by process 27709. Another mail client is using this mailbox. Please try again in a few minutes.