It happened sometimes but not at the time I was testing the smtp.
Code:
Mar 13 09:16:07 mailsrv postfix/smtpd[16806]: connect from unknown[192.168.216.251]
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: setting up TLS connection from unknown[192.168.216.251]
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: SSL_accept:before/accept initialization
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: read from 0A0E9F80 [0A0FA180] (11 bytes => -1 (0xFFFFFFFF))
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: SSL_accept:error in SSLv2/v3 read client hello A
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: read from 0A0E9F80 [0A0FA180] (11 bytes => 11 (0xB))
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: 0000 16 03 01 00 53 01 00 00|4f 03 01 ....S... O..
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: read from 0A0E9F80 [0A0FA18B] (77 bytes => -1 (0xFFFFFFFF))
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: SSL_accept:error in SSLv3 read client hello B
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: SSL_accept:error in SSLv3 read client hello B
Mar 13 09:16:08 mailsrv postfix/smtpd[16806]: read from 0A0E9F80 [0A0FA18B] (77 bytes => 77 (0x4D))
Thomas