POP3 connector delete message but not fetch

Hi, after yesterday update of NS7 mail retrieval stoped working. I see what is wrogn and find this in maillog:

Jan 19 14:15:02 server1 getmail: msg 1/3 (3410 bytes) msgid 00007da053a1b5a2 not retrieved (seen), deleted Jan 19 14:15:02 server1 getmail: msg 2/3 (38539 bytes) msgid 00007da153a1b5a2 not retrieved (seen), deleted Jan 19 14:15:02 server1 getmail: msg 3/3 (12016 bytes) msgid 00007da253a1b5a2 not retrieved (seen), deleted

In providers webmail messages were visible, but after downloading with getmail they missed and no message was downloaded to NS7.

Can anybody help?
Thanks.

Hah, change protocol from POP3 to IMAP makes it work!