Good morning,
I’m Christian Francischiello member of IT Team of MultiMedica Goup, an Italian Company.
I’m writing you because we have some problems with email delivery to some domains managed by messaglabs.com service provider.
Our investigation results is that:
the servers below, linked to sodexo.com and nutricia.com domains are dropping connection to our smtp servers
sodexo.com
cluster4.us.messagelabs.com internet address = 216.82.242.179
cluster4.us.messagelabs.com internet address = 216.82.251.33
cluster4.us.messagelabs.com internet address = 216.82.242.33
cluster4.us.messagelabs.com internet address = 216.82.251.34
cluster4out.us.messagelabs.com internet address = 216.82.251.33
cluster4out.us.messagelabs.com internet address = 216.82.242.33
cluster4out.us.messagelabs.com internet address = 216.82.242.179
cluster4out.us.messagelabs.com internet address = 216.82.251.34
nutricia.com
cluster5.eu.messagelabs.com internet address = 85.158.142.193
cluster5.eu.messagelabs.com internet address = 193.109.254.3
cluster5.eu.messagelabs.com internet address = 193.109.255.99
cluster5.eu.messagelabs.com internet address = 85.158.136.83
cluster5.eu.messagelabs.com internet address = 85.158.139.163
cluster5.eu.messagelabs.com internet address = 85.158.142.101
cluster5a.eu.messagelabs.com internet address = 85.158.139.103
our servers (multimedica.it)
212.239.122.242 smtp2.multimedica.it
212.239.122.243 smtp3.multimedica.it
Could you please check if source IP of our infrastructure are banned by your systems?
Thanks in advance for your cooperation and best regards,
Christian Francischiello.