Mark Constable writes:
Because of arguments like this, and that I do not even want to offer non-SSL options, I routinely disable ports 143 and 587 and only use ports 993 and 465 for authenticated user mail...https://www.agwa.name/blog/post/starttls_considered_harmful However just now I notice this comment and am now concerned that ie; port 465 might be deprecated and dropped by future Roundcube updates... https://github.com/roundcube/roundcubemail/blob/ee895a2c96a33b854c62a5835a7a1fcd24c02b39/config/defaultshinc.php#L251 I guess my question is; how safe is it to continue to rely on NOT using ports 143/587?
Perfectly safe.
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