Hi, We have been asked to consider using a set of 6 Postfix servers to provide a buffer between Exchange and our Compliance Archive servers, as follows:
. Normally Exchange will route directly to the archive servers, but can route via Postfix if required. . If all the archive servers are down for a number of days, then the Postfix server will buffer the mails from Exchange. . This could potentially equate to 1-2 million messages being stored on each Postfix server. . Once the archive servers are back up, then Postfix will be required to deliver the email. What are the pitfalls/recommendations for running Postfix against a large queue of > 1 million messages? I was considering having a number of hold queues configured, with scripts to switch hold queues every hour. A second set of scripts would then release the held messages once the archive servers are back up. Is this required/recommended, or can Postfix cope with large queues on its own? Any other good ideas/experience doing this? Robin
