Timing out while trying to connect to gmail. Config?

Newbie question: My rc file looks like this:

[retriever]
type = SimpleIMAPSSLRetriever
server = imap.gmail.com
mailboxes = ("Inbox", "[Gmail]/Sent Mail")
username = [email protected]
password = super-secret-password

[destination]
type = Maildir
path = ~/mail/gmail/raubvogel/

[options]
verbose = 2
message_log = ~/mail/mailog/log.gmail
# do not alter messages
delivered_to = false
received = false
delete = false

Short of the gmail-specific entries, it is the config I used to
retrieve emails from another account (used it to save 50K emails). I
checked some of the  config -- username/password/imap address -- by
using them with mutt, and it worked there. When I try to manually run
getmail using the above rc file, it just times out:

getmail -vvv --getmaildir ~/mail/mailrc -r
~/mail/mailrc/getmailrc.gmail.raubvogel
getmail version 5.6
Copyright (C) 1998-2012 Charles Cazabon.  Licensed under the GNU GPL version 2.
SimpleIMAPSSLRetriever:[email protected]@imap.gmail.com:993:
read_all and not delete -- all messages will be retrieved each time
getmail is run
SimpleIMAPSSLRetriever:[email protected]@imap.gmail.com:993:
getmailrc.gmail.raubvogel: socket error (('The read operation timed out',))
  0 messages (0 bytes) retrieved, 0 skipped

and I have no clue why. Suggestions?