hi tse-jdavis,
thanks for your reply. i did off the filtering and bypass the firewall filtering for the particular domain name. for now the testing still show the fail result whereby all emails currently are tried atleast 5 time bfore the abort message disappear.
the sender are hcl-axon.com and now its a bit weird where the smtp resolve are not the same with the succesfull email that we received. i can see from the mail header that none of below smtp sent us the mail.
Non-authoritative answer:
hcl-axon.com MX preference = 20, mail exchanger = smtp.axonglobal.com
hcl-axon.com MX preference = 50, mail exchanger = my.smtp.axonglobal.com
hcl-axon.com MX preference = 50, mail exchanger = us.smtp.axonglobal.com
hcl-axon.com MX preference = 10, mail exchanger = gws01.hcl.in
hcl-axon.com MX preference = 10, mail exchanger = gws02.hcl.in
hcl-axon.com MX preference = 10, mail exchanger = gws03.hcl.in
hcl-axon.com MX preference = 10, mail exchanger = gws04.hcl.in
smtp.axonglobal.com internet address = 195.153.131.9
my.smtp.axonglobal.com internet address = 211.24.239.58
us.smtp.axonglobal.com internet address = 209.67.184.200
gws01.hcl.in internet address = 203.105.185.19
gws02.hcl.in internet address = 203.105.185.20
gws03.hcl.in internet address = 203.105.186.19
gws04.hcl.in internet address = 203.105.186.20
need help.
successfull email header show that received from another smtp even with the same domain name.
Received: from eng.hcltech.com (eng.hcltech.com [192.8.65.10])