On 9 May 2013, at 18:26, Joshua McNary wrote: > I have seen the Gmail "421 4.7.0 Temporary System Problem." > intermittently. Some messages go through and other do not. Thanks for the report. Could you try this: http://freron.lighthouseapp.com/projects/58672-mailmate/tickets/392-unable-to-send-with-gmail#ticket-392-24 -- Benny