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Subject: sendmail FAQ

This article was archived around: NNTP-Posting-Sun, 25 Apr 2010 14:00:14 -0500

All FAQs in Directory: mail/sendmail
All FAQs posted in: comp.mail.sendmail, comp.mail.misc
Source: Usenet Version


Posted-By: auto-faq 3.3 (Perl 5.008) Archive-name: mail/sendmail/faq Posting-Frequency: posted on the 10th and 25th of each month Last-modified: January 1, 2010 URL: http://www.sendmail.org/faq/ Maintainer: Sendmail FAQ <sendmail-faq-YYYY@sendmail.org>
Sendmail Frequently Asked Questions (FAQ) Last updated January 1, 2010 Changes since the last post on 10 Apr 2009 12:00:01 US/Pacific * none Top 5 - the *most* frequently asked questions about sendmail: 1. Local config error: see 4.5 2. Relaying denied: see 3.27 3. Directory permissions: see 3.33 4. Virtual hosting: see 3.7 & 3.28 5. POP / IMAP: see 4.19 Table of Contents * 1. COPYRIGHT NOTICE / REDISTRIBUTION REQUIREMENTS http://www.sendmail.org/faq/section1.html * 2. INTRODUCTION / MISCELLANEOUS http://www.sendmail.org/faq/section2.html + 2.1 What is this newsgroup? + 2.2 What is the scope of this FAQ? + 2.3 Where can I find the latest version of this FAQ? + 2.4 Where can I send comments, questions and bug reports? + 2.5 Where can I ask email-related DNS questions? + 2.6 How can I subscribe to these newsgroups? + 2.7 Which version of sendmail should I run? + 2.8 What is the latest release of sendmail? + 2.9 Where can I find it? + 2.10 What are the differences between Version 8 and other versions? + 2.11 What's the best platform for running sendmail? + 2.12 What is BIND and where can I get the latest version? + 2.13 What is smrsh and where can I get it? + 2.14 What is smap and where can I get it? + 2.15 What is TCP-Wrappers and where can I get it? + 2.16 Why won't db 1.85 build on my machine? + 2.17 What is makemap and where can I get it? * 3. VERSION 8 SPECIFIC ISSUES http://www.sendmail.org/faq/section3.html + 3.1 How do I make all my addresses appear to be from a single host? + 3.2 How do I rewrite my "From:" lines to read ``First_Last@My.Domain'' or ``Different_Name@My.Domain''? + 3.3 But what about fully-qualified addresses, such as those from Pine or FEATURE(always_add_domain)? + 3.4 So what was the user database feature intended for? + 3.5 Why the hostility to using full names for email addresses? + 3.6 deprecated + 3.7 How do I manage several (virtual) domains? + 3.8 There are four UUCP mailers listed in the configuration files. Which one should I use? + 3.9 deprecated + 3.10 How do I solve "collect: I/O error on connection" or "reply: read error from host.name" errors? + 3.11 Why can't my users forward their mail to a program? + 3.12 Why do connections to the SMTP port take such a long time? + 3.13 Why do I get "unknown mailer error 5 -- mail: options MUST PRECEDE recipients" errors? + 3.14 Why does version 8 sendmail panic my SunOS box? + 3.15 Why does the Unix From line get mysteriously munged when I send to an alias? + 3.16 Why doesn't MASQUERADE_AS (or the user database) work for envelope addresses as well as header addresses? + 3.17 How do I run version 8 sendmail and support the MAIL11V3 protocol? + 3.18 Why do messages disappear from my queue unsent? + 3.19 When is sendmail going to support RFC 2047 MIME header encoding? + 3.20 Why can't I get mail to some places, but instead always get the error "reply: read error from name.of.remote.host"? + 3.21 Why doesn't "FEATURE(xxx)" work? + 3.22 How do I configure sendmail not to use DNS? + 3.23 How do I get all my queued mail delivered to my Unix box from my ISP? + 3.24 Why do I get the error message unable to write /etc/mail/sendmail.pid? + 3.25 Why can't I compile sendmail with Berkeley DB 2.X? + 3.26 What operating systems has Berkeley sendmail been ported to? + 3.27 How do I prevent "Relaying Denied" errors for my clients? + 3.28 Why isn't virtual hosting working, even after I added a "Kvirtuser" line to sendmail.cf ? + 3.29 How can I add a header specifying the actual recipient when having multiple users in a virtual domain go to a single mailbox? + 3.30 What do I do when Build fails because groff was not found? + 3.31 What does "class hash not available" mean? + 3.32 How do I configure majordomo with sendmail 8.9 without relaxing the DontBlameSendmail option? + 3.33 How do I configure my system in general with sendmail 8.9? + 3.34 What does "foo not available for sendmail programs" mean? + 3.35 How do I add a footer/signature to all (outgoing) e-mail messages? + 3.36 What does "Cannot open hash database ... Invalid argument" mean? + 3.37 What does "parse error before `NDBM'" mean? + 3.38 What does "may be forged" mean? + 3.39 How do I send using an alternate port? + 3.40 Why can't I use Berkeley DB 4.1.x? + 3.41 How do I use CIDR notation in the access map (or other places)? + 3.42 Why isn't CIDR notation directly supported by sendmail? + 3.43 What does "Need to recompile with -DNEWDB for hash support" mean? + 3.44 I disabled sendmail on some machines which don't receive mail, but since upgrading to 8.12 they can't *send* mail either; why? * 4. GENERAL SENDMAIL ISSUES http://www.sendmail.org/faq/section4.html + 4.1 Should I use a wildcard MX for my domain? + 4.2 How can I set up an auto-responder? + 4.3 How can I get sendmail to deliver local mail to $HOME/.mail instead of into /usr/spool/mail (or /usr/mail)? + 4.4 Why does it deliver the mail interactively when I'm trying to get it to go into queue only mode? + 4.5 How can I solve "MX list for hostname points back to hostname" and "config error: mail loops back to myself" messages? + 4.6 Why does my sendmail process sometimes hang when connecting over a SLIP/PPP link? + 4.7 How can I summarize the statistics generated by sendmail in the syslog? + 4.8 How can I check my sendmail.cf to ensure that it's re-writing addresses correctly? + 4.9 What is procmail, and where can I get it? + 4.10 How can I solve "cannot alias non-local names" errors? + 4.11 Is sendmail Year 2000 (Y2K) compliant? + 4.12 How can I batch remote mail to be sent using my ISP while delivering local mail immediately? + 4.13 What does "unknown mailer error 1" mean? + 4.14 How do I queue mail for another domain? + 4.15 How do I create attachments with sendmail? + 4.16 How do I find sendmail's version number? + 4.17 How do I handle user names with upper-case characters? + 4.18 What does "NOQUEUE: Null connection from ..." mean? + 4.19 How do I configure sendmail for POP/IMAP/... ? + 4.20 How can I automatically copy messages based on sender or recipient addresses? + 4.21 How can I send mail to all users? + 4.22 Why can't I receive external mail? + 4.23 How do I restrict attachments with sendmail? + 4.24 Can I get sendmail to verify an entire e-mail address instead of just the domain? * 5. VENDOR/OS SPECIFIC SENDMAIL ISSUES http://www.sendmail.org/faq/section5.html + 5.1 Sun Microsystems SunOS/Solaris 1.x/2.x o 5.1.1 How can I solve "line 273: replacement $3 out of bounds" errors? o 5.1.2 How can I solve "line 445: bad ruleset 96 (50 max)" errors? o 5.1.3 Why does version 8 sendmail (< 8.7.5) sometimes hang under Solaris 2.5? o 5.1.4 Why can't I use SunOS/Solaris to get email to certain large sites? o 5.1.5 Why do I have trouble compiling on Solaris? o 5.1.6 How does 8.X compare to 8.X+Sun? + 5.2 IBM AIX o 5.2.1 The system resource controller always reports sendmail as "inoperative". What's wrong? o 5.2.2 Why can't I use AIX to get email to some sites? o 5.2.3 Why can't I get sendmail 8.7.1 to use MX records with AIX 3.2.5? + 5.3 Linux o 5.3.1 Red Hat 5.3.1.1 Why do I have so many sendmail problems after configuring sendmail with linuxconf? 5.3.1.2 I built sendmail.cf from sendmail.mc and it works until the next reboot of the machine. What is going on? 5.3.1.3 Why can't I receive mail with Red Hat 7.1 and later? o 5.3.2 SuSE 5.3.2.1 Where is the sendmail.mc file on SuSE Linux? * 6. ADDITIONAL INFORMATION SOURCES (RFC 1807 bibliography format) http://www.sendmail.org/faq/section6.html + 6.1 Reference material devoted exclusively to sendmail + 6.2 Reference material with chapters or sections on sendmail + 6.3 Reference material on subjects related to sendmail + 6.4 World-wide web index pages on sendmail + 6.5 World-wide web index pages Internet email in general + 6.6 Online tutorials for sendmail + 6.7 Online archives of mailing lists and Usenet newsgroups, relating to Internet email * 7. THANKS! http://www.sendmail.org/faq/section7.html -- -- John Sponsor my 100-mile bike ride fund raiser for the American Lung Association http://action.lungusa.org/goto/jbeck