This is how long a name server should wait to retry an attempt to get fresh zone data from the primary name server if the first attempt should fail. Somewhere between 120 and 7200 should be okay.
Additional Information
A shorter value indicates that systems will retry faster if they encounter a failure. A longer value indicates that systems will wait a longer period of time before retrying.
RFC 1912:
Retry: If a secondary was unable to contact the primary at the
last refresh, wait the retry value before trying again. This
value isn't as important as others, unless the secondary is on
a distant network from the primary or the primary is more
prone to outages. It's typically some fraction of the refresh
interval. [RFC1912]
Your Email Deliverability is in Jeopardy!
Blacklisting is a sign that you are not actively managing your email deliverability. Other technologies - SPF, DKIM and DMARC are now just as important to get your email placed in the Inbox of your recipients. If you aren’t managing email deliverability, your message may never be heard.
MxToolbox Delivery Center Features:
- Insight into your SPF, DKIM and DMARC configuration to ensure your sending email properly
- DMARC Compliance checks for all of your reported email
- Adaptive Blacklist Monitoring of all your email senders
- Recommendations for improving DMARC compliance and DMARC policies
- Event-based reminders for emergent issues and on-going maintenance
DMARC is a necessity for your business!
Learn More about Email Delivery