Really confused about an incorrect serial number
We really need some help please. We use a stable version of Debian (BIND 9.7.3) to host hundreds of domains which is updated weekly. One domain keeps being transferred by the secondary DNS from the master domain. Our records show that it is always successfully transferred but the serial number is always incorrect. As a result, the whole cycle of the transfer gets repeated over and over. I have no idea why the serial number is incorrect because the primary server records the correct serial number. Would you possibly have an idea what is happening and how it can be corrected?
Thank you.
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