One of these *mc files cures my bounce problem. The one with the Masquerading stuff in it. >From another thread I've learned that masquerading doesn't work as I thought it did but for years now I've been masquerading what ever machines I have at home as `newsguy.com'. I thought I'd learned a way of using the `genericstable' to do something similar and not need to masquerade. My assumption was that the `Smart_host' at the other end of my sendmails outgoing activity required a resolvable host as source IP to avoid bouncing. I thought by setting some genericstable vars I could make it appear to be a resolvable host name. It is not an internet FQDN, just my own made up domain for my local lan. Therefore will never be resovable by dns lookups. My attempt at using generics tables consisted of adding: (see sendmail2.mc below for the full settings) FEATURE(`genericstable')dnl FEATURE(`generics_entire_domain')dnl And to /etc/mail/genericstable: reader reader@xxxxxxxxxxx Building the hash and restarting sendmail. With that in place I get these kind of errors: (wrapped for mail). They happen too quickly to be coming from the smart_host so its my sendmail process rejecting it. >From /var/log/messages Aug 14 19:31:34 reader sendmail[12324]: i7F0VTsA012322: to=<reader@xxxxxxxx>, ctladdr=<reader@xxxxxxxxxxxxxxxxx> (500/500), delay=00:00:04, xdelay=00:00:04, mailer=relay, pri=120355, relay=smtp.newsguy.com. [129.250.170.69], dsn=5.6.0, stat=Data format error Aug 14 19:33:05 reader sendmail[12353]: i7F0X40h012351: to=<hpreader@xxxxxxxxxxxxx>, ctladdr=<reader@xxxxxxxxxxxxxxxxx> (500/500), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=120369, relay=smtp.newsguy.com. [129.250.170.69], dsn=5.6.0, stat=Data format error === /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost # =========================================================== 192.168.0.4 reader.local.net0 reader # fedcore3 t1 [...] stripped list of non-pertinent HOSTs 192.168.0.4 is the machine in question ===== sendmail1.mc divert(-1)dnl include(`/usr/share/sendmail-cf/m4/cf.m4')dnl VERSIONID(`setup for Red Hat Linux')dnl OSTYPE(`linux')dnl define(`SMART_HOST',`smtp.newsguy.com') define(`confDEF_USER_ID',``8:12'')dnl define(`confTO_CONNECT', `1m')dnl define(`confTRY_NULL_MX_LIST',true)dnl define(`confDONT_PROBE_INTERFACES',true)dnl define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl define(`ALIAS_FILE', `/etc/aliases')dnl define(`STATUS_FILE', `/var/log/mail/statistics')dnl define(`UUCP_MAILER_MAX', `2000000')dnl define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl define(`confAUTH_OPTIONS', `A')dnl define(`CERT_DIR',`/etc/mail/certs') define(`confCACERT_PATH',`CERT_DIR') define(`confCACERT',`CERT_DIR/cacert.pem') define(`confSERVER_CERT',`CERT_DIR/cert.pem') define(`confSERVER_KEY',`CERT_DIR/key.pem') define(`confCLIENT_CERT',`CERT_DIR/cert.pem') define(`confCLIENT_KEY',`CERT_DIR/key.pem') define(`confTO_IDENT', `0')dnl FEATURE(`no_default_msa',`dnl')dnl FEATURE(`smrsh',`/usr/sbin/smrsh')dnl FEATURE(`mailertable')dnl FEATURE(`virtusertable')dnl FEATURE(`genericstable')dnl FEATURE(`generics_entire_domain')dnl GENERICS_DOMAIN(`local.net0')dnl FEATURE(redirect)dnl FEATURE(always_add_domain)dnl FEATURE(use_cw_file)dnl FEATURE(use_ct_file)dnl FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl FEATURE(`blacklist_recipients')dnl FEATURE(`accept_unresolvable_domains')dnl LOCAL_DOMAIN(`localhost.localdomain')dnl MAILER(smtp)dnl MAILER(procmail)dnl === sendmail2.mc divert(-1)dnl include(`/usr/share/sendmail-cf/m4/cf.m4')dnl VERSIONID(`setup for Red Hat Linux')dnl OSTYPE(`linux')dnl define(`SMART_HOST',`smtp.newsguy.com') define(`confDEF_USER_ID',``8:12'')dnl define(`confTO_CONNECT', `1m')dnl define(`confTRY_NULL_MX_LIST',true)dnl define(`confDONT_PROBE_INTERFACES',true)dnl define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl define(`ALIAS_FILE', `/etc/aliases')dnl define(`STATUS_FILE', `/var/log/mail/statistics')dnl define(`UUCP_MAILER_MAX', `2000000')dnl define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl define(`confAUTH_OPTIONS', `A')dnl define(`CERT_DIR',`/etc/mail/certs') define(`confCACERT_PATH',`CERT_DIR') define(`confCACERT',`CERT_DIR/cacert.pem') define(`confSERVER_CERT',`CERT_DIR/cert.pem') define(`confSERVER_KEY',`CERT_DIR/key.pem') define(`confCLIENT_CERT',`CERT_DIR/cert.pem') define(`confCLIENT_KEY',`CERT_DIR/key.pem') define(`confTO_IDENT', `0')dnl FEATURE(`no_default_msa',`dnl')dnl FEATURE(`smrsh',`/usr/sbin/smrsh')dnl FEATURE(`mailertable')dnl FEATURE(`virtusertable')dnl FEATURE(`genericstable')dnl GENERICS_DOMAIN(`local.net0')dnl FEATURE(redirect)dnl FEATURE(always_add_domain)dnl FEATURE(use_cw_file)dnl FEATURE(use_ct_file)dnl FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl FEATURE(`blacklist_recipients')dnl FEATURE(`accept_unresolvable_domains')dnl LOCAL_DOMAIN(`localhost.localdomain')dnl MASQUERADE_AS(`newsguy.com')dnl FEATURE(masquerade_envelope)dnl MAILER(smtp)dnl MAILER(procmail)dnl
