Hi,
We are owning the domain alarmnet.com and users who have purchased Honeywell thermostats receive all kind of alerts, notifications, registration information as emails to their registered email IDs. The SMTP servers used to send emails are below.
198.140.154.31
204.141.56.152
204.141.56.6
198.140.154.32
The above SMTP servers are working fine and we are not facing any undelivered issues. We recently migrated our SMTP servers and now using the below SMTP servers.
199.62.84.36
199.62.84.67
While we were facing problems with our SMTP spool count, we surprised to find that all the emails which are not delivered or kept in spool for 2- 4 days are for MessageLabs (The domain's MX records resolves to MessageLabs). I could see my new IPs 199.62.84.36 & 199.62.84.67 are not blacklisted anywhere including symantec nor they have bad reputation. I belive there is some black or filter from your side needs to be adjusted. Can you please check and help fix the issue. We suspect our customers are missing emails.
Some of the messagelabs domains we send email:
ancilla.edu
wellsfargo.com
reyesholdings.com
csc.com
newmarketinc.com
hrgreen.com
daybreakventure.com
Please help.