-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Gora Mohanty writes: > Hi,
> I have set up iptables rules to accept SMTP requests. Is there > a danger in not specifying a destination (source) for the > INPUT (OUTPUT) rules, i.e., could someone use this as an > open relay if I do not specify destination/source? If you've placed no access control/restrictions on SMTP server, then only it can be (ab)used as Open SMTP relay. Access Control settings are specific to mail server, e.g. for Postfix, refer to SMTPD_ACCESS_README[1] which ships with its documentation. References: [1] http://www.postfix.org/SMTPD_ACCESS_README.html HTH - -- Ashish SHUKLA “I think I can safely say that nobody understands quantum mechanics.” (Richard Feynman, 1965) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iQIcBAEBCgAGBQJPLRHLAAoJEMdGz6nnT6SwAQAP/A/tD+PvVgqcSNjDuwb49LLd lDLI1IqGsAJZ4mtqXgI+49u2OYlawyBJevGJqzjSgGrKwadac+Hg+W/MogoTgwon FRTBDiapmSnHOdGdmNZ27oTeFPz/JigN2HxWoCtCaR8vCmrd2lEOg+dyR6xX8yf/ uff6kKjGKcbdxyTvunafoLh+6TlEW512qNjEzzx6N5DdkR7TK3J/VHZrBlToO0nO 4zyCfGJAGGOlLCVAbNV7lT9phnMWgct48R2r5tvoF9MOOKxcJMvNDToUjtyhklH3 ys1ivG+p8itPoUmzaRzF6UpmAMk+VH6H5JheD+S7c55kUq0xwBKfyB2fFreuCkdP d+6y6sWT8yfhKjh82UL/9Da3Ie9YUSiKmdrCLuAKeI/tRrli3faIn8GxyGr+kPla yxYnZ67sM9Aj4Dv4eVYNgZBxz5OJnUYb/HXEN2JeVu9ZgoOAUGJz1CgbHvyc8yUE VXG+4plESSLyuCLBkP7M03aQgeZ3C31E3inhCiZyZhjqu2cJLYZLCkhnHxFGBPZZ A3dJA7sG8rRSq1DwkNYl8kEdtWjF0+p2MRxGsXCxoymzTwBnLC9nGxYsljw6Qsed SytvGWwxHCRBy+H3mLmVAgTpZZjoKaeViltAkKYWiZEY/RBrgnN84AX1pK8zJOq5 2n0PHj08twWNMuFCB/4o =f78M -----END PGP SIGNATURE----- _______________________________________________ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
