Milter-greylist

I've been running 4.0a6, and I tried to add a very short regex for a some of my
accounts. Two of those accounts were three-letter names, and those lines caused
syntax errors.

ie this causes an error: (exact username changed)

acl whitelist rcpt /\<foo@evi/

this does not: (exact username changed)

acl whitelist rcpt /\<some@evi/

Is there some rule that rcpt regexes need to be at least 9 chars long? AFAIK the
ones I added today are the shortest regexes I've ever used.

For reference, this is what I got in my logs when the service re-loaded the file
automatically:

milter-greylist: config error at line 411: syntax error

So I commented it out, and tried to start it again, and got an error on 413.

Both of the error lines were 3-character usernames, and were added
copy-paste-edit at the same time as several other entries.

If you want to see the structure of everything, this is lines 411-416, which I
just added. 411 and 413 are now commented out to avoid errors. I've changed all
the usernames to 12345, etc to match the exact length of the actual address.

#acl whitelist rcpt /\<123@evi/
acl whitelist rcpt /\<123456@evi/ flushaddr
#acl whitelist rcpt /\<123@evi/ flushadr
acl whitelist rcpt /\<123456@evi/ flushaddr
acl whitelist rcpt /\<1234@evi/ flushaddr
acl whitelist rcpt /\<1234@evi/ flushaddr

(and yes, the first one didn't have a flushaddr, as it's not a reliable
spamtrap. The others are.)