On 09.10.2019 23:13, Matt Schwartz wrote:
Hello List,

I am getting a lot of repeated 421 try again later errors from various lists that I am a member of. There is one in particular that is coming from outbound.foodtecsolutions.com <http://outbound.foodtecsolutions.com>. Here is an excerpt from my /var/log/maillog. I am running OpenBSD 6.6-current #344.

Oct  9 16:07:53 meow smtpd[19379]: a52386b4311e607e smtp connected address= host=outbound.foodtecsolutions.com <http://outbound.foodtecsolutions.com> Oct  9 16:07:53 meow smtpd[19379]: a52386b4311e607e smtp failed-command command="DATA" result="421 try again later" Oct  9 16:07:53 meow smtpd[19379]: a52386b4311e607e smtp disconnected reason=quit

Below is my smtpd.conf file:
pki "mail" cert "/etc/ssl/mail.crt"
pki "mail" key "/etc/ssl/private/mail.key"

table aliases file:/etc/mail/aliases
table credentials passwd:/etc/mail/credentials
table extras file:/etc/mail/extras
table relays file:/etc/mail/relays
table rejects file:/etc/mail/rejects
table virtuals file:/etc/mail/virtuals

filter check_rejects phase connect match rdns regex <rejects> \
        disconnect "554 Forbidden"
filter check_rdns phase connect match !rdns \
        disconnect "554 No Reverse DNS Configured"
filter rspamd proc-exec "filter-rspamd"

listen on lo filter rspamd
listen on egress tls pki "mail" hostname "mail.goblackcat.com <http://mail.goblackcat.com>" \
        filter {check_rejects, check_rdns, rspamd}
listen on egress port submission tls-require pki "mail" hostname "mail.goblackcat.com <http://mail.goblackcat.com>" \
        auth <credentials> filter {check_rejects, check_rdns, rspamd}

action "local_mail" mbox alias <aliases>
action "virtual_mail" maildir "/var/vmail/%{dest.domain}/%{dest.user}" junk \
        virtual <virtuals>
action "outbound" relay

match for local action "local_mail"
match !from src <relays> mail-from "@goblackcat.com <http://goblackcat.com>" reject match from any for domain "goblackcat.com <http://goblackcat.com>" action "virtual_mail"
match auth from any for any action "outbound"
match for any action "outbound"

I am out of ideas with which to troubleshoot. I am already running smtpd with -v switch for more verbosity.


Greylisting at work?

Good luck,

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