On 14 Jul 2017, at 06:40, Tom Hudson <tom.hud...@giacom.com> wrote: > Just to let you know, the problem appears to have been caused by the > "daemon_timeout" being set far too low during our initial configuration. I > know the default in postfix is 18000s but ours had been set to 60s! > Increasing this to 600s appears to have caused the problem to go away.
Does it occur to you that there might possibly be a reason the default is 18000 and that reducing it by a couple of orders of magnitude is not something you should just do without knowing the ramifications? Do you even know what the setting does? -- Apple broke AppleScripting signatures in Mail.app, so no random signatures.