Hi, some of my clients are experiencing imap and pop connection issues. And I’ve found that it might cause by the IP might changed on arrow server and made the dns pointing to wrong ip. Will the IP change often? As there’s no such problem like this for the past year.
Yes, it could change at any moment. If you use an A record pointing to our servers instead of a CNAME, you will need to build automation to check for updates or you may experience an outage with no warning.
I consider an IP change to be equivalent to a failover event and part of regular administration, and in every instruction I stress always use a CNAME record.