Sendmail 8.9.3 Release Notes

26 Chapter2

Installation Information

Compatibility with Previous Versions

Customers currently using any 8.x version of Sendmail do not need to

modify their conﬁguration ﬁle. It is compatible with this release of

Sendmail. However, HP recommends using the Sendmail 8.9.3

conﬁguration ﬁle (/usr/newconfig/etc/mail) delivered with this

release in order to effectively use the new features and changes

incorporated in this version. Site-speciﬁc changes can be made as

required.

Before using the sendmail 8.9.3 sendmail.cf ﬁle, consider that by default

sendmail 8.9.3 does not relay to provide increased security and prevent

spammers from spamming. While sendmail 8.x relays by default.

However, many new rulesets have been provided to revert back to the old

behaviour completely or partially.

Also, in this version a number of rulesets have been added to check the

sender and recipient address. Thus, sendmail-8.9.3 will not accept

invalid sender and recipient addresses.

Anti-spamming Rulesets

The anti-spamming rulesets that were provided in sendmail-8.8.6 are

not supported in sendmail-8.9.3. The ﬁles that were provided to specify

the domain, hostanames, IP addresses of the spammers are no longer

supported. (/etc/Mail/Spammer, /etc/Mail/SpamDomains,

/etc/Mail/LocalIP, /etc/Mail/LocalNames, /etc/Mail/RelayTo,

/etc/Mail/DeniedIP, /etc/Mail/DeniedNames). This has been

replaced by the Access database provided. The default access database

being /etc/mail/access.db.

A number of rulesets have been added to achieve the same functionality

as sendmail-8.8.6. However, there is no one-to-one mapping of the

rulesets. Thus it is strongly recommended that customers use the

sendmail-8.9.3 sendmail.cf ﬁle as it provides more security and many

more rulesets to avoid spamming.

To enable some of the new anti-spamming rulesets provided in

sendmail-8.9.3, a shell script "gen_cf" is distributed along with the

patch.