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Hi, I have installed the dovecot on my redhat linux host. But when I log in with dovecot/test I got Error: no authentication failed after I got ok dovecot ready when I connect to local host. dovecot/test was set in the password.dovecot file. But I do not know how can I use this username and password in the configuration file. Could anyone give me a hand to let me know how to configurate the

Hi everyone, I am sure that this question has been asked here some time ago but I do not remember the answer and was unable to find it in the archives... Below is my question: suppose that I have a data.frame x and one of it's columns name is "CPI/RPI" (without quotation marks of course). How can I reference this column? Neither of x$CPI/RPI or x$"CPI/RPI" work. I