Sorry, I am new to using Thunderbird as a newsreader and can't get it to send followups. The following is the ssh info on my older Mac and new rpi5. They talk to each other with scp and rsync. Any ideas how to proceed?
Mac mini OSX Version 10.8.5
mini:Posts snelson$ uname -a Darwin mini.home 12.6.0 Darwin Kernel Version 12.6.0: Wed Mar 18
16:23:48 PDT 2015; root:xnu-2050.48.19~1/RELEASE_X86_64 x86_64 mini:Posts snelson$ ssh -V OpenSSH_5.9p1, OpenSSL 0.9.8zg 14 July 2015 mini:Posts snelson$ ls -al /etc/ssh*
-rw-r--r-- 1 root wheel 1732 Apr 11 2013 /etc/ssh_config
-rw-r--r-- 1 root wheel 1319 Nov 30 2007 /etc/ssh_config.applesaved
-rw-r--r-- 1 root wheel 1465 Sep 24 2007 /etc/ssh_config.system_default
-rw-r--r-- 1 root wheel 1622 Oct 21 2016 /etc/ssh_config~orig
-rw------- 1 root wheel 668 Feb 15 2007 /etc/ssh_host_dsa_key
-rw-r--r-- 1 root wheel 590 Feb 15 2007 /etc/ssh_host_dsa_key.pub
-rw------- 1 root wheel 515 Feb 15 2007 /etc/ssh_host_key
-rw-r--r-- 1 root wheel 319 Feb 15 2007 /etc/ssh_host_key.pub
-rw------- 1 root wheel 887 Feb 15 2007 /etc/ssh_host_rsa_key
-rw-r--r-- 1 root wheel 210 Feb 15 2007 /etc/ssh_host_rsa_key.pub
-rw-r--r-- 1 root wheel 3797 Apr 11 2013 /etc/sshd_config
-rw-r--r-- 1 root wheel 2772 Nov 30 2007 /etc/sshd_config.applesaved
-rw-r--r-- 1 root wheel 3362 Sep 24 2007 /etc/sshd_config.system_default
-rw-r--r-- 1 root wheel 3698 Oct 21 2016 /etc/sshd_config~orig mini:Posts snelson$
Rpi5 Debian Bookworm pi@rpi5:~ $ uname -a Linux rpi5 6.1.0-rpi8-rpi-2712 #1 SMP PREEMPT Debian 1:6.1.73-1+rpt1 (2024-01-25) aarch64 GNU/Linux pi@rpi5:~ $ ssh -V OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023 pi@rpi5:~ $ ls -al /etc/ssh total 624 drwxr-xr-x 4 root root 4096 Jan 16 17:09 . drwxr-xr-x 139 root root 12288 Feb 25 09:41 ..
-rw-r--r-- 1 root root 573928 Sep 23 17:11 moduli
-rw-r--r-- 1 root root 1650 Sep 23 17:11 ssh_config drwxr-xr-x 2 root root 4096 Sep 23 17:11 ssh_config.d
-rw-r--r-- 1 root root 3223 Sep 23 17:11 sshd_config drwxr-xr-x 2 root root 4096 Jan 16 17:11 sshd_config.d
-rw------- 1 root root 505 Dec 31 1969 ssh_host_ecdsa_key
-rw-r--r-- 1 root root 173 Dec 31 1969 ssh_host_ecdsa_key.pub
-rw------- 1 root root 399 Dec 31 1969 ssh_host_ed25519_key
-rw-r--r-- 1 root root 93 Dec 31 1969 ssh_host_ed25519_key.pub
-rw------- 1 root root 2590 Dec 31 1969 ssh_host_rsa_key
-rw-r--r-- 1 root root 565 Dec 31 1969 ssh_host_rsa_key.pub
-rw-r--r-- 1 root root 342 Feb 28 2020 ssh_import_id pi@rpi5:~ $ pi@rpi5:~/Downloads $