Red Hat Bugzilla – Bug 859052
Sendmail doesn't support dual-stack IPv4/IPv6 with static addresses: "too many daemons defined"
Last modified: 2013-07-31 21:53:58 EDT
Description of problem: Sendmail refuses to start when a server with both static IPv4 and IPv6 addresses is configured with an MSA, MTA & TLS. Version-Release number of selected component (if applicable): sendmail.x86_64 8.14.5-14.fc17 @updates How reproducible: Configure sendmail as follows (substitute your own addresses for the doc addresses used below!): DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl DAEMON_OPTIONS(`Port=smtp,Addr=192.0.2.1, Name=MTA4')dnl DAEMON_OPTIONS(`Port=smtp,Addr=::1, Family=inet6, Name=MTA6')dnl DAEMON_OPTIONS(`Port=smtp,Addr=2001:2001:DB8::19, Family=inet6, Name=MTA6')dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl DAEMON_OPTIONS(`Port=submission,Addr=192.0.2.1, Name=MSA4, M=Ea')dnl DAEMON_OPTIONS(`Port=submission,Addr=::1, Family=inet6, Name=MSA6, M=Ea')dnl DAEMON_OPTIONS(`Port=submission,Addr=2001:DB8::19, Family=inet6, Name=MSA6, M=Ea')dnl DAEMON_OPTIONS(`Port=smtps,Addr=127.0.0.1, Name=TLSMTA, M=s')dnl DAEMON_OPTIONS(`Port=smtps,Addr=192.0.2.1, Name=TLSMTA4, M=s')dnl DAEMON_OPTIONS(`Port=smtps,Addr=::1, Family=inet6, Name=TLSMTA6, M=s')dnl DAEMON_OPTIONS(`Port=smtps,Addr=2001:DB8::19, Family=inet6, Name=TLSMTA6, M=s')dnl Fails with: sendmail[2985]: 554 5.0.0 /etc/mail/sendmail.cf: line 287: too many daemons defined (10 max) sendmail[2985]: 554 5.0.0 /etc/mail/sendmail.cf: line 288: too many daemons defined (10 max) sendmail[2985]: NOQUEUE: SYSERR(root): /etc/mail/sendmail.cf: line 287: too many dae... max) sendmail[2985]: NOQUEUE: SYSERR(root): /etc/mail/sendmail.cf: line 288: too many dae... max) The problem is that the (hardcoded constant) MAXDAEMONS in sendmail/conf.h is 10 But this (reasonable) configuration requires 12 daemons: (MSA+MTA+TLS) * (LoopV4+LoopV6+WanV4+WanV6) = 3 * 4 = 12! This parameter controls a few smallish tables. Since one might imagine a site with more than one attached network, a value of 25 seems more reasonable. The following patch accomplishes this. I suggest also sending it upstream since IPV6 is (finally) gathering some momentum! Additional info: You won't notice this if you listen on the wildcard IP addresses as many people do, or if you only run 2 of the three daemon classes... cat sendmail_maxDaemons.patch --- sendmail/conf.h.orig 2012-09-20 08:27:18.000000000 -0400 +++ sendmail/conf.h 2012-09-20 08:28:00.000000000 -0400 @@ -110,11 +110,11 @@ #define MAXMACROID 0377 /* max macro id number */ /* Must match (BITMAPBITS - 1) */ #ifndef MAXHDRSLEN # define MAXHDRSLEN (32 * 1024) /* max size of message headers */ #endif /* ! MAXHDRSLEN */ -#define MAXDAEMONS 10 /* max number of ports to listen to */ +#define MAXDAEMONS 25 /* max number of ports to listen to */ #ifndef MAXINTERFACES # define MAXINTERFACES 512 /* number of interfaces to probe */ #endif /* MAXINTERFACES */ #ifndef MAXSYMLINKS # define MAXSYMLINKS 32 /* max number of symlinks in a path */
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Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.