On Sun 19 Nov 2023 at 04:29:57 (+0000), Tim Woodall wrote: > On Sat, 18 Nov 2023, Joe wrote: > > > If this area is likely to be the issue, try telnet to the IMAP server > > using port 143, you should get back a list of capabilities which may > > help. Oddly, though I'm using port 993 to my local server, it does not > > return any information from that port, only on 143. Presumably this is > > to assist security. > > I'd assume you need to use something like openssl s_client rather than > telnet to port 993.
Sure, but you still need to know what to type (assuming that's what you do), because it just sits there rather than blurting it all out: $ openssl s_client -starttls imap -crlf -connect lionunicorn.co.uk:993 CONNECTED(00000003) and nothing happens until: ^C 130 $ OTOH, openssl to port 143 is a bit more informative. Cheers, David.
