[exim] retry configuration

We are using the default retry configuration:

*                      *           F,2h,15m; G,16h,1h,1.5; F,4d,8h

My understanding is that for the first 2 hours, exim will retry every 15 minutes
at Fixed intervals.

But this is not occurring. exim tried to redeliver after 57 minutes.

Here is the exim_mainlog:

+++ 1Vp0G4-0005Vz-TB has not completed +++
2013-12-06 12:36:13 1Vp0G4-0005Vz-TB <= admin@??? U=txadmin P=local S=558 T="testing email" for admin@???
2013-12-06 12:37:16 1Vp0G4-0005Vz-TB receiving.com [255.255.255.255] Connection timed out
2013-12-06 12:37:16 1Vp0G4-0005Vz-TB == admin@??? R=lookuphost T=remote_smtp defer (110): Connection timed out
2013-12-06 13:34:35 1Vp0G4-0005Vz-TB receiving.com [255.255.255.255] Connection timed out
2013-12-06 13:34:35 1Vp0G4-0005Vz-TB == admin@??? R=lookuphost T=remote_smtp defer (110): Connection timed out

Is there another parameter conflicting with the default configuration?

I have reviewed:

http://www.exim.org/exim-html-current/doc/html/spec_html/ch-retry_configuration.html


Thanks in advance,
Anne