Owners should check the address, and unsubscribe the incorrect address and resubscribe with the correct address. If you are unable to contact the subscriber, it is probably best to unsubscribe the person and wait until they contact you, wondering what's happened with their email from the mailing list. Make certain the errors are consistent first. Another error that occurs is messages that appear normal are bounced to the owner, with the header Bounce - Admin request. If a poster includes either subscribe or unsubscribe in the first ten lines of their email, the message will be bounced to you .
Owners can redirect the bounced email to the list, following the instructions for moderated lists .
You need to respond and approve the message if the message is to reach the list. If you don't approve the message, just delete it and it won't be posted. Other mail programs should have a similar option. After choosing Forward or Redirect, the email will change to a format you can edit. Deleting the From line will mean replies go to you and the message will have apparently come from you, not the original poster, deleting the subject will mean the email is received by the mailing list without a subject, and deleting the date will mean the email will show the date when you resent it, not when the original poster sent it.