[horde] Masking part of the user's "login ID"

[joho@poolia.se]

We're using IMAP (Courier-IMAP) here.. as such, my username is really
"joho@localhost", but I need only specify "joho" when I log in to the
Horde/IMP/etc. environment. How do I avoid having Horde (latest stable)
displaying the @localhost when it greets me?

(Welcome, joho@localhost in the upper left-hand corner)


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