Dear all !

Using example test in help, running in centOS6.x, i have reiceved issue follow,
any know, please give us how to resolve this issue ?

[centos60]# cc -DSMTP_OPENSSL smtp.c -c -o smtp.o
[centos60]# cc -DSMTP_OPENSSL test.c -c -o test.o
[centos60]# cc test.o smtp.o -o smtp_test -lssl -lcrypto
smtp.o: In function smtp_tls_init': smtp.c:(.text+0x21b2): undefined reference to X509_check_host'
collect2: ld returned 1 exit status

thanks.