Unity Call-Home dispatch to CLM via SMTP

Unity call-home configured via Customer SMTP server by  svc_connectemc
Alerts and test messages not arrived to CLM portal 
https://clm-reporting-prd.cfcp.isus.emc.com/clm-reporting/#/sn/connecthome

Messages flow diagram:


E-Mail to emailalert@emc.com dropped in Customer SMTP gateways

- check emailalert configuration

06:32:16 service@A1-UNITY-380 spa:~/user# svc_connectemc -g
INFO [spa]: SMTP Host: 10.100.110.24
INFO [spa]: SENDER EMAIL: eli.brank@customer.com
INFO [spa]: EMC Destination Email: emailalert@emc.com
06:32:32 service@A1-UNITY-380 spa:~/user# 

if configuration (none) - should be corrected
INFO [spa]: SENDER EMAIL: (none)@emc.com   <--  wrong configuration

06:31:23 service@A1-UNITY-380 spa:~/user# svc_connectemc -m eli.brank@customer.com
INFO [spa]: Verifying peer connectivity ...
INFO [spa]: Setting sender email address to eli.brank@customer.com
06:32:16 service@A1-UNITY-380 spa:~/user#

- send test message
06:32:41 service@A1-UNITY-380 spa:~/user# svc_connectemc -t
INFO [spa]: Test Dialhome request sent
06:32:45 service@A1-UNITY-380 spa:~/user#

- collect fresh LOGs (SP_Collect) from Unity
open tar archive  Unity_380_service_data_CKM00202500XXX_2020-09-16_06_38_34\spa.service_dc\spa.service_dc\spa\opt\connectemc\logs
review end of file  ConnectEMCEmail.log

[2020-09-16 06:33:18] Email session details...
[2020-09-16 06:33:18] Encrypted file[1]=/opt/connectemc/poll/RSC_CKM00202500XXX_091620_063303711.cec. Size=3304
[2020-09-16 06:33:18] To: emailalert@emc.com
[2020-09-16 06:33:18] Email server: 10.100.110.24
[2020-09-16 06:33:18] To: emailalert@emc.com
[2020-09-16 06:33:18] Subject: connectemc mail
[2020-09-16 06:33:18] Attaching /opt/connectemc/poll/RSC_CKM00202500XXX_091620_063303711.cec
[2020-09-16 06:33:18] Email OK /opt/connectemc/poll/RSC_CKM00202500XXX_091620_063303711.xml 
[2020-09-16 06:33:18] Email sent to mail server successfully
2020-09-16T06:33:19  217     Info       EMAAPI3.1.0-1                


- check external SMTP mailer log
2020-09-16 09:33:18.630 [162354] H=(VM-MAIL.customer.com) [10.1.110.224]:40882 I=[10.61.18.104]:5100 F=<eli.brank@customer.com> rejected RCPT <emailalert@emc.com>: Not allowed sender eli.brank@customer.com

2020-09-16 16:01:22.429 [406448] H=(VM-MAIL.customer.com) [10.1.110.224]:46830 I=[10.61.18.104]:5100 F=<emailalert@emc.com> rejected RCPT <emailalert@emc.com>: Not allowed sender emailalert@emc.com

- finally should be