Yes. This is a long-standing problem with 4D internet commands. It goes back to at least v6. I know it’s still present in v13 for sure, and you are confirming it’s in v16.4R4.
If I remember, I think it may also be limited to 256 total characters in the full path on Windows (maybe Mac too), so you have to be careful of files that are buried several folders deep. This is one of the issues I’m hoping the SMTP Transporter in v18 does not have a problem with. Randy ---------------------------------------------------------------------- Randy Jaynes Senior Programmer and Customer Support http://printpoint.com • 845.687.3741 • PrintPoint, Inc • 57 Ludlow Lane • Palisades, NY 10964 Please send all email contacts to [email protected] > On Apr 23, 2020, at 2:41 PM, Joe Dombroski via 4D_Tech <[email protected]> > wrote: > > I have been having occasional -43 protocol not supported errors when I > attach files to an email. I finally dug in and found that I must keep the > file name under 29 characters. Anyone else notice this? I am on 16.4r4. > > Joe Dombroski > Brandywine Electronics, LTD ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************

