Something like this?

DECLARE@min-2 DATETIME

DECLARE@max-2 DATETIME

SELECT@min-2 = MIN(dtePostedToWebsiteDate)

FROMdtlVacancyPostAudit

WHEREbitPostToWebSite = 1

SET@max-2 = DATEADD(MONTH,DATEDIFF(MONTH,0,CURRENT_TIMESTAMP)+1,0)

SELECTDATENAME(MONTH,@min) AS MinMonth,

YEAR(@min) AS MinYear,

DATEADD(MONTH,sv.number,@min)

FROMmaster.dbo.spt_values AS sv -- You can use a Tally table instead as well

WHEREsv.type = 'P'

ANDDATEADD(MONTH,sv.number,@min) < @max-2

You can check the below link for a Tally table creation script

http://www.sqlservercentral.com/scripts/Advanced+SQL/62486/