Hi,
On 09/06/2026 9:22 am, Bill Cole via Postfix-users wrote:
On 2026-06-08 at 22:01:54 UTC-0400 (Mon, 08 Jun 2026 22:01:54 -0400)
Al <[email protected]>
is rumored to have said:
is rumored to have said:
Hi,
I keep getting disabled on [email protected] mailing list. I
have resubscribed many times. Is there a problem with my
configuration? What can I do to fix this?
You need to stop rejecting mail from the list. That could be because
you've chose strict DMARC enforcement, which is incompatible with
most discussion mailing lists.
I am not using DMARC.
That makes the situation less obvious. Examine your logs to find the
rejections, which should give you a hint as to why they are happening.
I have taken a look at my logs:
This is the error:
Jun 9 12:03:41 sequoia postfix/smtpd[52759]: NOQUEUE: reject: RCPT from
unknown[45.90.5.195]: 554 5.7.1 Client host rejected: cannot find your
reverse hostname, [45.90.5.195];
from=<[email protected]> to=<[email protected]>
proto=ESMTP helo=<list.sys4.de>
However, most of the of the time it lets, it through:
0.43, dsn=2.6.0, status=sent (250 2.6.0 <[email protected]> Message
accepted for delivery)
Jun 14 06:35:36 sequoia postfix/qmgr[83260]: 4DC2D1F5A07: removed
I added:
[email protected] OK
to sender_checks and this seems to have resolved this issue. I have to
wonder if it is dns or what is causing this, because it only failed once
in a while.
However, the other smtpd_*_restrictions lists may be involved, or there
may be other things in your config causing the issue.
For less uncertain analysis, it would help to have the full "postconf
-nf" output (listing explicitly set non-default configs) and the
relevant log lines reporting the failures.
alias_database = hash:/usr/local/etc/postfix/aliases
alias_maps = hash:/usr/local/etc/postfix/aliases
canonical_maps = hash:/usr/local/etc/postfix/canonical.sender
command_directory = /usr/local/sbin
compatibility_level = 3.7
daemon_directory = /usr/local/libexec/postfix
data_directory = /var/db/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd
$daemon_directory/$process_name $process_id & sleep 5
disable_vrfy_command = yes
html_directory = /usr/local/share/doc/postfix
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailbox_size_limit = 0
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
meta_directory = /usr/local/libexec/postfix
mydestination = localhost
mydomain = teisprint.com
myhostname = sequoia.teisprint.com
mynetworks = 127.0.0.0/8, 10.10.2.0/24
mynetworks_style = host
myorigin = $myhostname
newaliases_path = /usr/local/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = /usr/local/share/doc/postfix
sample_directory = /usr/local/etc/postfix
sender_canonical_maps = hash:/usr/local/etc/postfix/canonical.sender
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
shlib_directory = /usr/local/lib/postfix
smtp_tls_CApath = /etc/ssl/certs
smtpd_hard_error_limit = 5
smtpd_helo_required = yes
cidr:/usr/local/etc/postfix/client_checks, check_sender_access
hash:/usr/local/etc/postfix/sender_checks, check_sender_access
hash:/usr/local/etc/postfix/sender_access,
reject_unknown_sender_domain,
reject_unknown_reverse_client_hostname,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname, reject_non_fqdn_hostname,
reject_non_fqdn_sender, reject_non_fqdn_recipient,
reject_unknown_helo_hostname,
reject_unknown_reverse_client_hostname,
reject_unauth_pipelining, reject_invalid_hostname,
reject_unauth_destination, reject_unknown_sender_domain,
reject_unknown_recipient_domain, permit
strict_rfc821_envelopes = yes
unknown_client_reject_code = 554
unknown_local_recipient_reject_code = 550
virtual_alias_maps =
mysql:/usr/local/etc/postfix/mysql-virtual-alias-maps.cf,
mysql:/usr/local/etc/postfix/mysql-virtual-email2email.cf
virtual_gid_maps = static:2000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains =
mysql:/usr/local/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_mailbox_maps =
mysql:/usr/local/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_minimum_uid = 500
virtual_transport = virtualprocmail:dummy
virtual_uid_maps = static:2000
virtualprocmail_destination_recipient_limit = 1
Is this best practices, what other changes should be made?
I don't forward any of my own emails anywhere, I really like to use
pine email client on the server myself, but this is not for everyone.
What is funny is everyone asked for webmail, but now that I have it
working, everyone wants theirs forwarded. I think I am the only one
using roundcube.
Feel good about getting Roundcube working, your users may one day find
it more attractive than forwarding to Yahoo or other behemoths.
Forwarding to any large mailbox provider is problematic if your users
are on discussion mailing lists like this one or if you fail to catch
spam before forwarding it. Over time the problems with forwarding have
only gotten worse.
Kind Regards,
Al
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