We have OpenSUSE 11.2 64bit installed (Intel XEON 4 core 2.5GHz, 4GB RAM, 500GB RAID ). One of our requirements is to provide huge emails (up to 100M each) sending and receiving. For this purpose we have configured posfix and dovecot(POP3+IMAP). Then issue is that when email size is greater than 32M it sometimes (very often) couldn't be received by users through POP3 protocol and also through IMAP (receiving process fails at server side).

Does someone have similar issues?
Could it be a kernel or hardware compatibility issue?