Well, I think I have it. I had someone here point me to some doc I had never seen, and ultimately wound up on this page: https://www.ibm.com/support/pages/what-do-if-receiving-error-messages-eza2590e-and-edc8121i-eza2589e-or-eza1721w
So after trying a number of different combinations of values in my SYSFTPD file, the answer was to add FTPKeepAlive 60 For those who are interested, my SYSFTPD looks like this: //SYSFTPD DD * ClientErrCodes Extended ; Request extended error codes ClientExit True ; FTP client exit on error FWFriendly True ; Passive mode LogClientErr True ; Log FTP client errors FTPKeepAlive 60 ; Send control packet every 60 sec /* I hope that this can help someone in the future! Don ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
