We were able to connect to your mail server on port 25, but the connection took much longer than expected. This could indicate that your email server is under heavy load.

Here are the levels for which we issue warnings and alerts:

Over 5 Seconds: Warning
Over 8 Seconds: Alert

Having this warning on your lookup does not necessarily mean that you will have a problem receiving mail. It is simply a warning that things are less than optimal. This could end up causing users to experience delays with inbound mail.

Additional Information

Tarpitting

It is also possible your server is “Tar pitting.” Tar pitting is a technique used by some email servers to slow down spammers. The idea is that legitimate senders will wait longer to establish a connection than spammers will.

Here is a link to a link to the TechNet article with more information about Tarpitting

DMARC is the key to improving Email Deliverability!

Email is the key to your customer communication strategy. But, what is your email reputation?

Setting up and managing your DMARC configuration is the key to getting insight into your email delivery. MxToolbox is the key to understanding DMARC.

MxToolbox Delivery Center gives you:

Who is sending phishing email purporting to be from your domain
What is the reputation of your domains and delegated IPs
Where other senders are and What their reputations are
How your SPF, DKIM and DMARC setup is performing
What on-going maintenance you need to maintain and improve your email deliverability

Learn More

SMTP Connection Time

More Information About Smtp Connection Time

Additional Information

Tarpitting

DMARC is the key to improving Email Deliverability!

MxToolbox Delivery Center gives you:

MxToolBox has been Updated