Package: exim4 Version: 4.92-8+deb10u3 Severity: normal Tags: ipv6 Dear Maintainer,
I was getting a "Relay not permitted" message from Thunderbird trying to send e-mail. The immediate workaround was to change the "Server Name:" in Server Settings from "localhost" to "127.0.0.1". However, the manpage says, and said in squeeze [1], > dc_relay_nets > A list of machines for which we serve as smarthost. _Please note that > 127.0.0.1 and ::1 are always permitted to relay since /usr/lib/sendmail is > available anyway and relay control doesn't make sense here._ Sets macro > MAIN_RELAY_NETS (I actually had "...; 127.0.0.1/8; [::1]/128; ..." in dc_relay_nets, but taking those entries out didn't seem to make any difference.) Testing with "telnet", IPv4 localhost is allowed to relay, IPv6 localhost isn't: # telnet -4 localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 huitzil.lmert.com ESMTP Exim 4.92 Sun, 19 Jan 2020 16:21:27 -0500 EHLO localhost 250-huitzil.lmert.com Hello localhost [127.0.0.1] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-CHUNKING 250-PRDR 250 HELP MAIL FROM: te...@lmert.com 250 OK RCPT TO: john....@example.net 250 Accepted # telnet -6 localhost 25 Trying ::1... Connected to localhost. Escape character is '^]'. 220 huitzil.lmert.com ESMTP Exim 4.92 Sun, 19 Jan 2020 16:22:10 -0500 EHLO localhost 250-huitzil.lmert.com Hello localhost [::1] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-CHUNKING 250-PRDR 250 HELP MAIL FROM: te...@lmert.com 250 OK RCPT TO: john....@example.net 550 relay not permitted ... and a log line from the second attempt ... 2020-01-19 16:22:32 H=(localhost) [::1] F=<te...@lmert.com> rejected RCPT john....@example.net: relay not permitted [1]: https://manpages.debian.org/jessie/exim4-config/update-exim4.conf.8.en.html -- Package-specific info: Exim version 4.92 #5 built 27-Sep-2019 16:09:35 Copyright (c) University of Cambridge, 1995 - 2018 (c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018 Berkeley DB: Berkeley DB 5.3.28: (September 9, 2013) Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages DANE DKIM DNSSEC Event OCSP PRDR SOCKS TCP_Fast_Open Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch nis nis0 passwd Authenticators: cram_md5 plaintext Routers: accept dnslookup ipliteral manualroute queryprogram redirect Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp Fixed never_users: 0 Configure owner: 0:0 Size of off_t: 8 Configuration file search path is /etc/exim4/exim4.conf:/var/lib/exim4/config.autogenerated Configuration file is /var/lib/exim4/config.autogenerated # /etc/exim4/update-exim4.conf.conf # # Edit this file and /etc/mailname by hand and execute update-exim4.conf # yourself or use 'dpkg-reconfigure exim4-config' # # Please note that this is _not_ a dpkg-conffile and that automatic changes # to this file might happen. The code handling this will honor your local # changes, so this is usually fine, but will break local schemes that mess # around with multiple versions of the file. # # update-exim4.conf uses this file to determine variable values to generate # exim configuration macros for the configuration file. # # Most settings found in here do have corresponding questions in the # Debconf configuration, but not all of them. # # This is a Debian specific file dc_eximconfig_configtype='smarthost' dc_other_hostnames='*****; *****; *****' dc_local_interfaces='' dc_readhost='lmert.com' dc_relay_domains='lmert.com; *****.lmert.com' dc_minimaldns='false' dc_relay_nets='192.168.***.0/24; [fe80::]/10; [****:***:****:**::]/64' dc_smarthost='*****.net::587' CFILEMODE='644' dc_use_split_config='true' dc_hide_mailname='true' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' mailname:lmert.com # /etc/default/exim4 EX4DEF_VERSION='' # 'combined' - one daemon running queue and listening on SMTP port # 'no' - no daemon running the queue # 'separate' - two separate daemons # 'ppp' - only run queue with /etc/ppp/ip-up.d/exim4. # 'nodaemon' - no daemon is started at all. # 'queueonly' - only a queue running daemon is started, no SMTP listener. # setting this to 'no' will also disable queueruns from /etc/ppp/ip-up.d/exim4 QUEUERUNNER='combined' # how often should we run the queue QUEUEINTERVAL='30m' # options common to quez-runner and listening daemon COMMONOPTIONS='' # more options for the daemon/process running the queue (applies to the one # started in /etc/ppp/ip-up.d/exim4, too. QUEUERUNNEROPTIONS='' # special flags given to exim directly after the -q. See exim(8) QFLAGS='' # Options for the SMTP listener daemon. By default, it is listening on # port 25 only. To listen on more ports, it is recommended to use # -oX 25:587:10025 -oP /run/exim4/exim.pid SMTPLISTENEROPTIONS='' -- System Information: Debian Release: 10.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages exim4 depends on: ii debconf [debconf-2.0] 1.5.71 ii exim4-base 4.92-8+deb10u3 ii exim4-daemon-light 4.92-8+deb10u3 exim4 recommends no packages. exim4 suggests no packages. -- debconf information: * exim4/drec:
