Hii, I had installed postfix in Ubuntu 16.04 and it was working seamlessly. Some time back I upgraded it to Ubuntu 18.04 and suddenly emails stop coming to my inbox. It gave me this error: postfix/postdrop[27466]: warning: mail_queue_enter: create file maildrop/675261.27466: Permission denied I restarted it nothing happens. I reinstalled it many times, but after few hours the emails stop coming and error creeps in. Can anyone help in solving this issue.
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