Error creating mailboxex with an "&" inside

Jorey Bump list at
Tue Feb 5 08:09:39 EST 2008

Toschi Pietro wrote, at 02/05/2008 06:57 AM:

> Apparently, cyrus-imapd does not support mailboxes with some letters 
> inside the name. “&” is one of that. I have some mailboxes containing 
> that symbol to be migrated from another server (SUN) but I always get an 
> error.
> Looking at the IMAP RFC it seems very complex to me to understand what 
> characters are supported and how by the protocol. I wander if there is a 
> way to make cyrus accept such mailboxes, for example using some sort of 
> escape sequences, encoding rules or so.
> Do someone have a solution to this annoying problem?

In Thunderbird, I can create a new folder named:


This results in a directory on the server named:


What tool are you using to migrate your mailboxes? Hopefully, something 
like imapsync will take care of these details for you.

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