4.5.2 Sendmail

20.02.2008

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4.5.2.1 Procmail →

→ /know how/sendmail
Virtual Hosting
# cat /etc/mail/virtusertable
# foo

contact@example.org    foo@example.com
/etc/aliases
# comment

foo:          reto@secundus.example.net,pgate@example.ch

# Alias to handle mail to prevent delivery
nobody          : /dev/null
4.1   Apache Webserver

4.1.1   Apache Links

4.1.1.1   mod_proxy

4.2   FTP

4.3   Samba (File Server)

4.4   NFS Server

4.5   Messaging, E-Mail

4.5.1   POP / IMAP

4.5.2   Sendmail

4.5.2.1   Procmail

4.5.3   SPAM / Spamassasin

4.6   DNS with Bind 9
Sendmail Geek Problems
"RunAsGid for MSP ignored" error 2004-03-25 22:55
"RunAsGid for MSP ignored" error

When sending mail through Sendmail's mail user agent or another mail user agent (ex. mutt), I received the following error:

WARNING: RunAsGid for MSP ignored, check group ids (egid=8809, want=1)
can not write to queue directory /var/spool/clientmqueue/ (RunAsGid=0, required=8809): Permission denied

Solution
Sendmail 2003-12-15 14:58
Status: 5.1.3
Diagnostic-Code: SMTP; 553  unable to verify address
Solution:
Use the -r option:
/usr/sbin/sendmail -r mailnull@valid_domain
Sendmail 2003-12-09 21:00
stat=Operating system error

Solution: Check if the smrsh binary is executable for the Sendmail process!
Sendmail: How To Set the hostname? 2005-04-16 00:38

Problem: You want to see the real hostname at Sendmail's welcome message instead of «localhost.localdomain»
# telnet localhost 25
Trying 127.0.0.1...
Connected to foo.example.com (127.0.0.1).
Escape character is '^]'.
220 localhost.localdomain ESMTP Sendmail 8.13.1/8.13.1; Sun, 17 Apr 2005 00:37:56 +0200
quit
Solution
vi /etc/hosts
# XX Hint: First listed hostnames are preferred
127.0.0.1               foo.example.com localhost.localdomain localhost
192.168.1.201   foo.example.com
newaliases / aliases.db out of date 2005-11-08 08:41
sendmail[13430]: alias database /etc/aliases.db out of date

This might have the case you installed courier imap on this host and its installation has replaced newaliases by an alternative that rises a conflict with a running "real" Sendmail.

Solution
Just make sure you are using the newaliases that points to Sendmail by (re-)creating this symlink:
rm -f /usr/bin/newaliases ln -s /usr/sbin/sendmail /usr/bin/newaliases
See also:

know-how/courier-imap - Reference
Courier is a modular multiprotocol mail server that's designed to strike a balance between reasonable performance, flexibility and features
infocopter.com/know-how/courier-imap/index.html

know-how/procmail - Reference
Samples and Recipes
infocopter.com/know-how/procmail/index.html

Related Links

Google.ch/search?...q=fallback+MX+host - Reference
MX Backup, fallback MX host
google.ch/search?hl=de&q=%22fallback+MX+host%22+site%3Asendmail.org

know-how/courier-imap - Reference
Courier is a modular multiprotocol mail server that's designed to strike a balance between reasonable performance, flexibility and features
infocopter.com/know-how/courier-imap/index.html

know-how/procmail - Reference
Samples and Recipes
infocopter.com/know-how/procmail/index.html

borabora.univalle.edu.co/.../mini-faq.html - Reference
Procmail FAQs
borabora.univalle.edu.co/materias/curso-www/mini-faq.html

Introduction to Procmail - Reference
A short presentation of Procmail
iki.fi/era/mail/procmail-presentation.html

HandsOnHowTo.com/pmail101.html - Reference
Introduction to procmail
handsonhowto.com/pmail101.html

csuchico.edu/~dranch/LINUX/... - Reference Software
Sendmail configuration tips
ecst.csuchico.edu/~dranch/LINUX/TrinityOS/cHTML/TrinityOS-c-25.html

Akadia.com/services/sendmail_tips.html - Reference Software
Sendmail Tips
akadia.com/services/sendmail_tips.html

uwasa.fi/~ts/info/proctips.html - Reference
Timo's procmail tips and recipes
uwasa.fi/~ts/info/proctips.html

Sendmail.org/faq/section3.html#3.29 - Reference
How can I add a header specifying the actual recipient when having multiple users in a virtual domain go to a single mailbox?
sendmail.org/faq/section3.html#3.29

Sendmail.org/~ca/email/doc/op-sh-5.html - Reference
This section describes the configuration file in detail
sendmail.org/~ca/email/doc/op-sh-5.html

pub...boulder.ibm.com/pseries/.../.../.../sendmail.cf.htm - CInternet:Webmaster Reference
sendmail.cf File Reference
publib16.boulder.ibm.com/pseries/en_US/files/aixfiles/sendmail.cf.htm

Sendmail.org/m4/masquerading.html - Reference
Configure Sendmail to map to other hostnames than the machine's hostname for sending out E-Mails (DNS Issue).
sendmail.org/m4/masquerading.html

64-bit.de/dokumentationen/...Mailserver-HOWTO... - Reference
Deutsche Erkl�rung der Sendmail Konfigurations-Files
64-bit.de/dokumentationen/netzwerk/f/002/DE-Mailserver-HOWTO-3.html

Sendmail.org/virtual-hosting.html - Reference
Virtual Hosting with Sendmail. A guide for the do-it-yourself people
sendmail.org/virtual-hosting.html

Hylafax.org/howto/clients/sendmail-faxmail-mangling.html - Reference
Email-To-Fax Configuration with sendmail. See also FAX Gateway
hylafax.org/howto/clients/sendmail-faxmail-mangling.html

cotse.com/unixtools.htm - CInternet:Webmaster Reference
UNIX Programs and Utilities
IPFilter, TCP_Wrappers, ISC Bind, DHCP, INN, Sendmail, Majordomo, Majorcool Web Interface for Majordomo, Imp The Imap Web Mail. Samba, Squid, Apache, rsync
cotse.com/unixtools.htm

ETHZ.ch/Publikationen/Dokumentation... - CInternet:Webmaster Reference
Dokumentationen. Informationen zu Windows und Windows2000. NT Backup Konzept (Wer soll was, wo, wie in einem NT Netzwerk sichern?). Perl 5. Sendmail Konfiguration und Installation. Einf�hrung in Einf�hrung in Windows 2000

id.ethz.ch/Publikationen/Dokumentation.html

tldp.org/HOWTO/Virtual-Services-HOWTO... - CInternet:Webmaster Reference
Virtual mail support, pop daemon
tldp.org/HOWTO/Virtual-Services-HOWTO-9.html