Hi team, our connections to messagelabs seem to be getting blocked, from what i can tell our IP is not on any block lists and does not appear when checked using
IP Reputation Investigation seems this is the only place to get support on this, i would prefer not to post details in this public forum, but seems that some connections are
connect to cluster9.us.messagelabs.com[67.219.247.64]:25: Connection timed out
or
host cluster4a.us.messagelabs.com[3.219.191.233] said: 421 Service Temporarily Unavailable (in reply to RCPT TO command)
any assistance would be great
cheers