>>while sendmail config tweaking is discussed: does our sendmail as
>>shipped on 1.4 and 1.5 permit non-pre-arranged third-party
>>relaying by default?  If it does, it's my opinion that it ought
>>to be fixed to not do that.
>i believe that 1.4 shipped with 8.8.8, which *is* an open relay by
>default.  1.5 has 8.11.0 in it, so that ought to be safe.  the default
>of open relaying was fixed in 8.9.0.

	my memory is just like above.  since 8.9.x, it checks MX record.

itojun