Any pointer is appreciated, including additional processes and conf's required/restarted, as well as other 'trivial' and security issues (since I never did this) - I know, there is a rich documentation, but fully digesting that 130KB doc is something I don't look forward to...
Thanks much .................... Horst. ################ problem summary: ################ Redhat 7.2, fresh installation. sendmail user1 to user2 on local machine works. sendmail outbound to remote machine works replying(or from scratch) from remote fails (see clip from efn) (all real names are replaced so hostname reads like 'machine1.domean.com' After editing 'local-host-names' executing 'make' in /etc/mail/ looked OK (see *.db below) [root@machine1 mail]# /etc/rc.d/init.d/sendmail restart Shutting down sendmail: [ OK ] Starting sendmail: [ OK ] [root@machine1 mail]# /etc/rc.d/init.d/sendmail status sendmail (pid 11927) is running... [root@machine1 mail]# ~~~~~~ who I am: ~~~~~~~~~~~ [root@machine1 conf]# hostname machine1.domean.com [root@machine1 conf]# #################### errors: ##################### ~~~~~~~~~~~ recieved at remote account and replied ~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~ ... but: ~~~~~~~~~~~~~~~~~~ The original message was received at Tue, 2 Apr 2002 16:45:43 -0800 (PST) from [EMAIL PROTECTED] [206.163.176.5] ----- The following addresses had transient non-fatal errors ----- <[EMAIL PROTECTED]> ----- Transcript of session follows ----- <[EMAIL PROTECTED]>... Deferred: Connection refused by machine1.domean.com. Warning: message still undelivered after 4 hours Will keep trying until message is 5 days old [ Part 2: "Delivery Status" ] Reporting-MTA: dns; clavin.efn.org Arrival-Date: Tue, 2 Apr 2002 16:45:43 -0800 (PST) Final-Recipient: RFC822; [EMAIL PROTECTED] Action: delayed Status: 4.4.1 Remote-MTA: DNS; machine1.domean.com Last-Attempt-Date: Tue, 2 Apr 2002 20:57:10 -0800 (PST) Will-Retry-Until: Sun, 7 Apr 2002 17:45:43 -0800 (PST) ~~~~~~~~~~~~~~~ another error, but local: ~~~~~~~~~~~~~~~~~~~ less /var/log/maillog ... Apr 3 09:45:26 localhost sendmail[11367]: NOQUEUE: machine1.domean.com [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA ... ############### directories, files, file content: #################### [root@machine1 mail]# pwd /etc/mail [root@machine1 mail]# ls -ltr total 68 -rw-r--r-- 1 root root 0 Mar 2 2001 virtusertable -rw-r--r-- 1 root root 127 Mar 2 2001 trusted-users -rw-r--r-- 1 root root 2220 Mar 2 2001 sendmail.mc -rw-r--r-- 1 root root 611 Mar 2 2001 Makefile -rw-r--r-- 1 root root 0 Mar 2 2001 mailertable -rw-r--r-- 1 root root 5573 Mar 2 2001 helpfile -rw-r--r-- 1 root root 0 Mar 2 2001 domaintable -rw-r--r-- 1 root root 155 Apr 2 15:02 local-host-names -rw-r--r-- 1 root root 528 Apr 2 15:54 access -rw-r--r-- 1 root root 12288 Apr 2 16:06 virtusertable.db -rw-r--r-- 1 root root 12288 Apr 2 16:06 mailertable.db -rw-r--r-- 1 root root 12288 Apr 2 16:06 domaintable.db -rw-r--r-- 1 root root 12288 Apr 2 16:06 access.db drwx------ 2 root root 4096 Apr 3 09:52 MISC [root@machine1 mail]# [root@machine1 mail]# ls -l /etc/send* -rw-r--r-- 1 root root 46245 Mar 2 2001 /etc/sendmail.cf [root@machine1 mail]# grep '/etc/mail/' ../sendmail.cf Fw/etc/mail/local-host-names FR-o /etc/mail/relay-domains Kmailertable hash -o /etc/mail/mailertable Kvirtuser hash -o /etc/mail/virtusertable Kaccess hash /etc/mail/access #O ErrorHeader=/etc/mail/error-header O HelpFile=/etc/mail/helpfile O UserDatabaseSpec=/etc/mail/userdb.db #O ServiceSwitchFile=/etc/mail/service.switch #O DefaultAuthInfo=/etc/mail/default-auth-info Ft/etc/mail/trusted-users [root@machine1 mail]# [root@machine1 mail]# cat local-host-names # local-host-names - include all aliases for your machine here. machine1.domean.com [root@machine1 mail]# cat access # Check the /usr/share/doc/sendmail-8.11.2/README.cf file for a description # of the format of this file. (search for access_db in that file) # The /usr/share/doc/sendmail-8.11.2/README.cf is part of the sendmail-doc # package. # # by default we allow relaying from localhost... localhost.localdomain RELAY localhost RELAY 127.0.0.1 RELAY # tried a few things, but now commented out. [root@machine1 mail]#