I have a fairly large mailing list (8K+) and when I send a mail to the list subscribers, there is a problem connecting to the mySQL db of the forums. I have 2 different forums , one with phpBB and other with SMF , and I am facing a problem for both forums. The main sites are static html , and I have no problem accessing them. I am using a VPS at present. Other than upgrading servers, is there anything else I can do to prevent this problem?
You can try using mysql persistent connections for the mailing program or increase max_connections for mysql.