Re: strange host lookups

Marco Moock  wrote:

The question is just why sendmail resolves that name, as it isn't an
SMTP recipient of the current mail nor a sender or hostname etc.

It is only part of the Reply-To header of the mail (to test if the

Addresses in headers might be rewritten (or need to be "fixed").

See for example sendmail/TUNING (and cf/README)

* DNS Lookups
-----------------------------------------------

sendmail performs by default host name canonifications by using
host name lookups.  This process is meant to replace unqualified
host name with qualified host names, and CNAMEs with the non-aliased
name.  However, these lookups can take a while for large address
lists, e.g., mailing lists.  If you can assure by other means that
host names are canonical, you should use

FEATURE(`nocanonify', `canonify_hosts')

in your .mc file.  For further information on this feature and
additional options see cf/README.
[[... read on ... ]]

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