We have had to block outgoing port 25 due to spamming from a compromised machine on a clients network. This has caused some of our public IP addresses to be added to some blocklists and is causing issue in regards to sending emails via Spark and possibly other services. This is a good reminder for people to keep their anti-virus software up to date.
Please contact us if you have any issues or need assistance.
For troubleshooting tips please click here.