Paul, > define(`SMART_HOST',`[barumtrading.co.uk]') Thank you - that unblocked it, although I have *no* idea why. > Sometimes mail gets stuck in sendmail's queue with host lookup problems > if there is a lame delegation for the recipient's domain. Is all of your > outgoing mail stuck, or just some of it? It was all of it, but when it unblocked, everything cleared. Jonathan ------------------------------------------------------------------------------ Jonathan Allen | jonathan@xxxxxxxxxxxxxxxxxx | Voice: 01404-823670 Barum Computer Consultants | | Fax: 01404-823671 ------------------------------------------------------------------------------