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Postfix: Host not found, try again

Small hint from me: If you set up Postfix to relay your mails and your relay host does not have an MX record (anymore), mailq has a lot of mails on standby and you see something like: Jul 14 12:45:39 myhostname postfix/smtp[2349]: 74FBF30501: to=<recip@recip.domain> relay=none, delay=3944, status=deferred (Name service error for name=recip.domain type=MX: Host not found, try again) And found this FAQ on and you say: “Yeah, the FAQ is right but so what now?

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