I had this problem also, the patch does indeed fix it. Attached is a patch fit for dropping directly into debian/patches
diff -ur mutt-1.5.6.orig/imap/util.c mutt-1.5.6/imap/util.c
--- mutt-1.5.6.orig/imap/util.c 2005-03-01 20:35:38.000000000 +0000
+++ mutt-1.5.6/imap/util.c 2005-03-01 20:45:52.000000000 +0000
@@ -269,6 +269,7 @@
* in IMAP. Additionally, the filesystem converts multiple hierarchy
* delimiters into a single one, ie "///" is equal to "/". IMAP servers
* are not required to do this.
+ * Moreover, IMAP servers may dislike the path ending with the delimiter.
*/
char *imap_fix_path (IMAP_DATA *idata, char *mailbox, char *path,
size_t plen)
@@ -295,6 +296,8 @@
}
x++;
}
+ if (path[x - 1] == idata->delim)
+ x--;
path[x] = '\0';
return path;
}
diff -ur mutt-1.5.6.orig/PATCHES mutt-1.5.6/PATCHES
--- mutt-1.5.6.orig/PATCHES 2005-03-01 20:35:39.000000000 +0000
+++ mutt-1.5.6/PATCHES 2005-03-01 20:44:16.000000000 +0000
@@ -13,3 +13,4 @@
patch-1.4.admcd.gnutls.59d
patch-1.5.5.1.cd.edit_threads.9.5
patch-1.5.6.rr.compressed.1
+patch-courier-imap-trailing-dot.1
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