SMTP via SSL/TLS to email router system backup

I use to be able to have my router send email backups to me via a script

/system backup save name=([/system identity get name] . "-System-" . \
[:pick [/system clock get date] 7 11] . [:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6]); \
/tool e-mail send to="support@xyz.com" subject=([/system identity get name] . " System Backup " . \
[/system clock get date]) file=([/system identity get name] . "-System-" . [:pick [/system clock get date] 7 11] . \
[:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6] . ".backup"); :delay 10; \
/file rem [/file find name=([/system identity get name] . "-System-" . [:pick [/system clock get date] 7 11] . \
[:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6] . ".backup")]; \
:log info ("System Backup emailed at " . [/sys cl get time] . " " . [/sys cl get date])

Since my uplink provider has blocked all traffic to smtp port 25 now, my router no long can send emails. I now send email via my PC’s email client to smtp.xyz.com and have my port set to 465 SSL/TLS

What would I adjust in my RD433AH or in my script to allow it to send email via this method?
Any help would be greatly appreciated

change settings under /tool e-mail

adjust settings for server, where you set up ip address and port number of server
and add for send command tls=yes