Lotus Protector for Mail Security stops sending and receiving mail with attachments. Mail without attachments are sent and received without issue.
Delays in receiving and sending mail with attachments. The delays can occur for an hour or longer.
In one case, there was some overlap where multiple policies were checking incoming mail using the same analysis modules.
Lotus Protector for Mail Security 2.9
Resolving the problem
Reduce the number of file types examined in the policy that check incoming attachments for executable files, focusing on the major executable files.
Reorder the policies to a more logical flow for incoming mail checks.