Apologies if someone has already suggested this, but you can get Putty for Linux, which will act as a telnet replacement. You can tell it which port to go to, if 23 is not what you want.
Cheers, Paul. On Wed, 8 Jul 2026 at 20:46, <[email protected]> wrote: > On Wed, Jul 08, 2026 at 02:24:54PM -0400, Greg Wooledge wrote: > > Someone in this thread mentioned using "socat - tcp:host:port" as a > > replacement for "telnet host port" for manually testing plaintext > > services. > > > > I just tried this, and learned that the two are not equivalent. > > qpsmtpd is quite insistent that all of its input lines be terminated > > by CR-LF, not by LF. > > [...] > > > So, I searched through the manual a bit more, and it turns out there's > > an option for that: > > > > =============================================================== > > hobbit:~$ socat - tcp:localhost:25,crnl > > [...] > > Heh. See my other post. Great minds... read the docs :-) > > Cheers > -- > t > -- *Paul Duncan* Marine Technician, R/V FALKOR (too) Schmidt Ocean Institute mobile +1 650.387.4151 VOIP +1 641.354.5141 schmidtocean.org <http://www.schmidtocean.org/> Follow us on social media! <http://schmidtocean.org/social-media-resources/> Sign up here <https://mailchi.mp/schmidtocean.org/subscribe>to subscribe to SOI's newsletter! This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you have received it in error, please advise the sender by reply email and delete the message and any attachments. Thank you.

