How can I use fetchmail with sendmail?
For most sendmails, no special configuration is required. Eric Allman tells me that if FEATURE(always_add_domain) is included in sendmail’s configuration, you can leave the rewrite option off. If your sendmail complains “sendmail does not relay”, make sure your sendmail.cf file says Cwlocalhost so that sendmail recognizes `localhost’ as a name of its host. If you’re mailing from another machine on your local network, also ensure that its IP address is listed in ip_allow or name in name_allow (usually in /etc/mail/) If you find that your sendmail doesn’t like the address `FETCHMAIL-DAEMON@localhost’ (which is used in the bouncemail that fetchmail generates), you may have to set FEATURE(accept_unqualified_senders). Günther Leber reports that Digital Unix sendmails won’t work with fetchmail. The symptom is an error message “553 Local configuration error, hostname not recognized as local”. The problem is that fetchmail normally feeds sendmail with the client machine’s host address in the
