Strange behavior Postfix 3.1.4 address verification

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Strange behavior Postfix 3.1.4 address verification

Waschl
Hello,

first the logs:

Jul 27 12:52:46 mail postfix/smtpd[4341]: connect from itexchange16.itbspa.local[192.168.116.200]
Jul 27 12:52:46 mail postfix/smtpd[4341]: Anonymous TLS connection established from itexchange16.itbspa.local[192.168.116.200]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Jul 27 12:52:46 mail postfix/cleanup[4345]: 3xJ82Q6ycVzyp9: message-id=<3xJ82Q6ycVzyp9@mail.itbspa.de>
Jul 27 12:52:46 mail postfix/qmgr[4150]: 3xJ82Q6ycVzyp9: from=<double-bounce@itbspa.de>, size=221, nrcpt=1 (queue active)
Jul 27 12:52:47 mail postfix/smtp[4346]: Untrusted TLS connection established to 172.18.1.11[172.18.1.11]:25: TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)
Jul 27 12:52:52 mail postfix/smtp[4346]: 3xJ82Q6ycVzyp9: to=<j.wallinger@bspa.de>, relay=172.18.1.11[172.18.1.11]:25, delay=5.1, delays=0/0.02/0.1/5, dsn=2.1.5, status=deliverable (250 2.1.5 Recipient OK)
Jul 27 12:52:52 mail postfix/qmgr[4150]: 3xJ82Q6ycVzyp9: removed
Jul 27 12:52:52 mail postgrey[705]: action=pass, reason=client whitelist, client_name=itexchange16.itbspa.local, client_address=192.168.116.200, sender=ebenbeck@itbspa.de, recipient=J.Wallinger@bspa.de
Jul 27 12:52:52 mail postfix/smtpd[4341]: NOQUEUE: reject: RCPT from itexchange16.itbspa.local[192.168.116.200]: 450 4.1.1 <J.Wallinger@bspa.de>: Recipient address rejected: unverified address: User unknown; from=<ebenbeck@itbspa.de> to=<J.Wallinger@bspa.de> proto=ESMTP helo=<webmail.itbspa.de>
Jul 27 12:52:52 mail postfix/smtpd[4341]: disconnect from itexchange16.itbspa.local[192.168.116.200] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6

The strange thing is that the verification probe is all lowercase while the mail address has two uppercase letters. The verification probe is succesfull but the receipient gets rejected. Test with mail address in lowercase works. Before with Postfix 2.11 everything was fine. Now i have a new mailserver with Postfix 3.1.4 that acts like described.

Hope someone can help me...
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Re: Strange behavior Postfix 3.1.4 address verification

Wietse Venema
Waschl:

> Hello,
>
> first the logs:
>
> Jul 27 12:52:46 mail postfix/smtpd[4341]: connect from
> itexchange16.itbspa.local[192.168.116.200]
> Jul 27 12:52:46 mail postfix/smtpd[4341]: Anonymous TLS connection
> established from itexchange16.itbspa.local[192.168.116.200]: TLSv1.2 with
> cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
> Jul 27 12:52:46 mail postfix/cleanup[4345]: 3xJ82Q6ycVzyp9:
> message-id=<[hidden email]>
> Jul 27 12:52:46 mail postfix/qmgr[4150]: 3xJ82Q6ycVzyp9:
> from=<[hidden email]>, size=221, nrcpt=1 (queue active)
> Jul 27 12:52:47 mail postfix/smtp[4346]: Untrusted TLS connection
> established to 172.18.1.11[172.18.1.11]:25: TLSv1.2 with cipher
> ECDHE-RSA-AES256-SHA384 (256/256 bits)
> Jul 27 12:52:52 mail postfix/smtp[4346]: 3xJ82Q6ycVzyp9:
> to=<[hidden email]>, relay=172.18.1.11[172.18.1.11]:25, delay=5.1,
> delays=0/0.02/0.1/5, dsn=2.1.5, status=deliverable (250 2.1.5 Recipient OK)
> Jul 27 12:52:52 mail postfix/qmgr[4150]: 3xJ82Q6ycVzyp9: removed
> Jul 27 12:52:52 mail postgrey[705]: action=pass, reason=client whitelist,
> client_name=itexchange16.itbspa.local, client_address=192.168.116.200,
> sender=[hidden email], recipient=[hidden email]
> Jul 27 12:52:52 mail postfix/smtpd[4341]: NOQUEUE: reject: RCPT from
> itexchange16.itbspa.local[192.168.116.200]: 450 4.1.1 <[hidden email]>:
> Recipient address rejected: unverified address: User unknown;
> from=<[hidden email]> to=<[hidden email]> proto=ESMTP
> helo=<webmail.itbspa.de>
> Jul 27 12:52:52 mail postfix/smtpd[4341]: disconnect from
> itexchange16.itbspa.local[192.168.116.200] ehlo=2 starttls=1 mail=1 rcpt=0/1
> quit=1 commands=5/6
>
> The strange thing is that the verification probe is all lowercase while the
> mail address has two uppercase letters. The verification probe is succesfull
> but the receipient gets rejected. Test with mail address in lowercase works.
> Before with Postfix 2.11 everything was fine. Now i have a new mailserver
> with Postfix 3.1.4 that acts like described.
>
> Hope someone can help me...

TO REPORT A PROBLEM see http://www.postfix.org/DEBUG_README.html#mail

TO (UN)SUBSCRIBE see http://www.postfix.org/lists.html

Thank you for using Postfix.

In particular, note the request for configuration information.  Do
not cut and paste from files; use 'postconf' command output instead.

        Wietse
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Re: Strange behavior Postfix 3.1.4 address verification

Waschl
postconf -Mf:

smtp       inet  n       -       y       -       1       postscreen
smtpd      pass  -       -       y       -       -       smtpd
    -o smtpd_proxy_filter=127.0.0.1:10024
    -o smtpd_client_connection_count_limit=20
    -o smtpd_proxy_options=speed_adjust
dnsblog    unix  -       -       y       -       0       dnsblog
tlsproxy   unix  -       -       y       -       0       tlsproxy
pickup     unix  n       -       n       60      1       pickup
cleanup    unix  n       -       n       -       0       cleanup
qmgr       unix  n       -       n       300     1       qmgr
tlsmgr     unix  -       -       n       1000?   1       tlsmgr
rewrite    unix  -       -       n       -       -       trivial-rewrite
bounce     unix  -       -       n       -       0       bounce
defer      unix  -       -       n       -       0       bounce
trace      unix  -       -       n       -       0       bounce
verify     unix  -       -       n       -       1       verify
flush      unix  n       -       n       1000?   0       flush
proxymap   unix  -       -       n       -       -       proxymap
proxywrite unix  -       -       n       -       1       proxymap
smtp       unix  -       -       n       -       -       smtp
relay      unix  -       -       n       -       -       smtp
showq      unix  n       -       n       -       -       showq
error      unix  -       -       n       -       -       error
retry      unix  -       -       n       -       -       error
discard    unix  -       -       n       -       -       discard
local      unix  -       n       n       -       -       local
virtual    unix  -       n       n       -       -       virtual
lmtp       unix  -       -       n       -       -       lmtp
anvil      unix  -       -       n       -       1       anvil
scache     unix  -       -       n       -       1       scache
maildrop   unix  -       n       n       -       -       pipe flags=DRhu
    user=vmail argv=/usr/bin/maildrop -d ${recipient}
uucp       unix  -       n       n       -       -       pipe flags=Fqhu
    user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail     unix  -       n       n       -       -       pipe flags=F user=ftn
    argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp      unix  -       n       n       -       -       pipe flags=Fq.
    user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n       n       -       2       pipe flags=R
    user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop}
    ${user} ${extension}
mailman    unix  -       n       n       -       -       pipe flags=FR
    user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop}
    ${user}
submission inet  n       -       n       -       -       smtpd
    -o syslog_name=postfix/submission
    -o smtpd_proxy_filter=127.0.0.1:10026
    -o smtpd_client_connection_count_limit=20
    -o smtpd_proxy_options=speed_adjust
    -o smtpd_tls_security_level=encrypt
    -o smtpd_sasl_auth_enable=yes
    -o smtpd_tls_auth_only=yes
    -o smtpd_client_restrictions=permit_sasl_authenticated,reject
    -o smtpd_recipient_restrictions=$submission_recipient_restrictions
dovecot    unix  -       n       n       -       -       pipe flags=DRh
    user=vmail:vmail argv=/usr/lib/dovecot/deliver -f ${sender} -d
    ${user}@${domain} -m ${extension}
127.0.0.1:10025 inet n   -       n       -       -       smtpd
    -o syslog_name=postfix/10025
    -o content_filter=
    -o local_recipient_maps=
    -o relay_recipient_maps=
    -o smtpd_authorized_xforward_hosts=127.0.0.0/8
    -o smtpd_restriction_classes=
    -o smtpd_delay_reject=no
    -o smtpd_tls_security_level=none
    -o smtpd_client_restrictions=permit_mynetworks,reject
    -o smtpd_helo_restrictions=
    -o smtpd_sender_restrictions=
    -o smtpd_recipient_restrictions=permit_mynetworks,reject
    -o smtpd_end_of_data_restrictions=
    -o mynetworks_style=host
    -o mynetworks=127.0.0.0/8
    -o strict_rfc821_envelopes=yes
    -o smtpd_error_sleep_time=0
    -o smtpd_soft_error_limit=1001
    -o smtpd_hard_error_limit=1000
    -o smtpd_client_connection_count_limit=0
    -o smtpd_client_connection_rate_limit=0
    -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks

postconf -n:

address_verify_positive_expire_time = 7d
address_verify_positive_refresh_time = 1d
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_min_user = no
allow_percent_hack = no
biff = no
bounce_queue_lifetime = 4h
bounce_template_file = /etc/postfix/bounce.de-DE.cf
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
compatibility_level = 2
daemon_directory = /usr/lib/postfix/sbin
data_directory = /var/lib/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
delay_warning_time = 1h
disable_vrfy_command = yes
dovecot_destination_recipient_limit = 1
enable_long_queue_ids = yes
enable_original_recipient = no
inet_interfaces = all
inet_protocols = ipv4
lmtp_tls_ciphers = $smtpd_tls_ciphers
lmtp_tls_exclude_ciphers = $smtpd_tls_exclude_ciphers
lmtp_tls_mandatory_ciphers = $smtpd_tls_mandatory_ciphers
lmtp_tls_mandatory_exclude_ciphers = $smtpd_tls_mandatory_exclude_ciphers
mail_owner = postfix
mailq_path = /usr/bin/mailq
maximal_queue_lifetime = 4d
message_size_limit = 20971520
mydestination = $myhostname, localhost, localhost.localdomain
mydomain = itbspa.de
myhostname = mail.itbspa.de
mynetworks = 127.0.0.0/8 192.168.118.0/24 172.16.1.4/32 172.16.1.13/32 172.16.1.21/32 172.16.1.68/32 172.16.1.69/32 172.18.1.11/32 172.18.1.13/32 172.18.1.16/32 172.18.1.20/32 172.18.1.41/32 172.18.1.58/32 172.28.1.11/32 172.28.1.13/32 172.30.1.11/32 192.168.18.13/32 192.168.28.13/32 192.168.116.15/32 192.168.116.100/32 192.168.116.200/32 192.168.119.10/32
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
notify_classes = 2bounce, resource, software
postscreen_access_list = permit_mynetworks, cidr:/etc/postfix/postscreen_access.cidr
postscreen_bare_newline_enable = no
postscreen_blacklist_action = enforce
postscreen_cache_map = btree:$data_directory/postscreen_cache
postscreen_client_connection_count_limit = $smtpd_client_connection_count_limit
postscreen_command_count_limit = 20
postscreen_command_time_limit = ${stress?10}${stress:300}s
postscreen_disable_vrfy_command = $disable_vrfy_command
postscreen_discard_ehlo_keyword_address_maps = $smtpd_discard_ehlo_keyword_address_maps
postscreen_discard_ehlo_keywords = $smtpd_discard_ehlo_keywords
postscreen_dnsbl_action = enforce
postscreen_dnsbl_reply_map = pcre:/etc/postfix/postscreen_dnsbl_reply
postscreen_dnsbl_sites = zen.spamhaus.org*3 hostkarma.junkemailfilter.com=127.0.0.2*2 rep.mailspike.net=127.0.0.[10;11]*2 b.barracudacentral.org*2 rep.mailspike.net=127.0.0.[12;13] dnsbl.sorbs.net=127.0.0.[6;10] db.wpbl.info=127.0.0.2 bl.spamcop.net ix.dnsbl.manitu.net psbl.surriel.com dnsbl.inps.de ubl.unsubscore.com hostkarma.junkemailfilter.com=127.0.0.1*-2 list.dnswl.org=127.0.[0..255].2*-1 list.dnswl.org=127.0.[0..255].3*-2 rep.mailspike.net=127.0.0.[18;19]*-1 rep.mailspike.net=127.0.0.20*-2
postscreen_dnsbl_threshold = 3
postscreen_dnsbl_timeout = 5s
postscreen_dnsbl_whitelist_threshold = -2
postscreen_enforce_tls = $smtpd_enforce_tls
postscreen_expansion_filter = $smtpd_expansion_filter
postscreen_forbidden_commands = $smtpd_forbidden_commands
postscreen_greet_action = enforce
postscreen_greet_banner = $myhostname - Please wait to be seated
postscreen_greet_ttl = 1d
postscreen_greet_wait = ${stress?2}${stress:4}s
postscreen_helo_required = $smtpd_helo_required
postscreen_non_smtp_command_enable = no
postscreen_pipelining_enable = no
postscreen_post_queue_limit = $default_process_limit
postscreen_pre_queue_limit = $default_process_limit
postscreen_reject_footer = $smtpd_reject_footer
postscreen_tls_security_level = $smtpd_tls_security_level
postscreen_use_tls = $smtpd_use_tls
postscreen_watchdog_timeout = 10s
proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps $smtpd_sender_restrictions $sender_dependent_relayhost_maps
queue_directory = /var/spool/postfix
recipient_bcc_maps = proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_user.cf proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_domain.cf
recipient_delimiter = +
relay_domains = $mydestination proxy:ldap:/etc/postfix/ldap/relay_domains.cf
sender_bcc_maps = proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_user.cf proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_domain.cf
sender_dependent_relayhost_maps = proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_domain.cf proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_user.cf
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtp_tls_CAfile = $smtpd_tls_CAfile
smtp_tls_cert_file = $smtpd_tls_cert_file
smtp_tls_ciphers = $smtpd_tls_ciphers
smtp_tls_exclude_ciphers = $smtpd_tls_exclude_ciphers
smtp_tls_key_file = $smtpd_tls_key_file
smtp_tls_loglevel = 1
smtp_tls_mandatory_ciphers = $smtpd_tls_mandatory_ciphers
smtp_tls_mandatory_exclude_ciphers = $smtpd_tls_mandatory_exclude_ciphers
smtp_tls_mandatory_protocols = !SSLv2 !SSLv3
smtp_tls_protocols = !SSLv2, !SSLv3
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP ready
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_discard_ehlo_keyword_address_maps = cidr:/etc/postfix/discard_ehlo.cidr
smtpd_end_of_data_restrictions = check_policy_service inet:127.0.0.1:7777
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks permit_sasl_authenticated check_helo_access pcre:/etc/postfix/helo_access.pcre reject_non_fqdn_helo_hostname reject_invalid_helo_hostname
smtpd_recipient_restrictions = reject_unknown_recipient_domain reject_non_fqdn_recipient reject_unlisted_recipient check_policy_service inet:127.0.0.1:10023 check_policy_service inet:127.0.0.1:7777 permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_path = private/dovecot-auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = proxy:ldap:/etc/postfix/ldap/sender_login_maps.cf
smtpd_sender_restrictions = reject_unknown_sender_domain reject_non_fqdn_sender reject_unlisted_sender permit_mynetworks reject_sender_login_mismatch permit_sasl_authenticated
smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/letsencrypt/live/mail.itbspa.de/fullchain.pem
smtpd_tls_ciphers = high
smtpd_tls_dh1024_param_file = /etc/postfix/dh2048.pem
smtpd_tls_dh512_param_file = /etc/postfix/dh512.pem
smtpd_tls_eecdh_grade = strong
smtpd_tls_exclude_ciphers = aNULL, DES, RC4, MD5, DSS
smtpd_tls_key_file = /etc/letsencrypt/live/mail.itbspa.de/privkey.pem
smtpd_tls_loglevel = 1
smtpd_tls_mandatory_ciphers = high
smtpd_tls_mandatory_exclude_ciphers = aNULL, DES, RC4, MD5, DSS
smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3
smtpd_tls_protocols = !SSLv2 !SSLv3
smtpd_tls_received_header = no
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
submission_recipient_restrictions = reject_unknown_recipient_domain reject_non_fqdn_recipient reject_unlisted_recipient check_policy_service inet:127.0.0.1:7777 permit_mynetworks permit_sasl_authenticated reject_unauth_destination
swap_bangpath = no
tls_high_cipherlist = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA
tls_preempt_cipherlist = yes
tls_random_source = dev:/dev/urandom
transport_maps = proxy:ldap:/etc/postfix/ldap/transport_maps_user.cf proxy:ldap:/etc/postfix/ldap/transport_maps_domain.cf
unknown_address_reject_code = 550
unknown_local_recipient_reject_code = 550
unverified_recipient_reject_code = 550
unverified_recipient_reject_reason = User unknown
unverified_sender_reject_code = 550
unverified_sender_reject_reason = User unknown
virtual_alias_domains =
virtual_alias_maps = proxy:ldap:/etc/postfix/ldap/virtual_alias_maps.cf proxy:ldap:/etc/postfix/ldap/virtual_group_maps.cf proxy:ldap:/etc/postfix/ldap/virtual_group_members_maps.cf proxy:ldap:/etc/postfix/ldap/catchall_maps.cf
virtual_gid_maps = static:2000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:ldap:/etc/postfix/ldap/virtual_mailbox_domains.cf
virtual_mailbox_maps = proxy:ldap:/etc/postfix/ldap/virtual_mailbox_maps.cf
virtual_minimum_uid = 2000
virtual_transport = dovecot
virtual_uid_maps = static:2000
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Re: Strange behavior Postfix 3.1.4 address verification

Wietse Venema
> unverified_recipient_reject_reason = User unknown
> unverified_sender_reject_reason = User unknown

Please disable these two settings, for example:

$ postconf -# unverified_recipient_reject_reason unverified_sender_reject_reason
$ postfix reload

and report the logs of the problem with these settings.

I need to know the true reason why the request is rejected,
not the text that you configured in main.cf.

        Wietse
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Re: Strange behavior Postfix 3.1.4 address verification

Waschl
Hello. Here is the log after disabling the reject reasons:

Jul 28 07:44:04 mail postfix/smtpd[12265]: connect from itexchange16.itbspa.local[192.168.116.200]
Jul 28 07:44:05 mail postfix/smtpd[12265]: Anonymous TLS connection established from itexchange16.itbspa.local[192.168.116.200]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Jul 28 07:44:05 mail postfix/verify[12269]: cache btree:/var/lib/postfix/verify_cache full cleanup: retained=0 dropped=0 entries
Jul 28 07:44:05 mail postfix/cleanup[12270]: 3xJd7n0QgSz110M: message-id=<3xJd7n0QgSz110M@mail.itbspa.de>
Jul 28 07:44:05 mail postfix/qmgr[12176]: 3xJd7n0QgSz110M: from=<double-bounce@itbspa.de>, size=223, nrcpt=1 (queue active)
Jul 28 07:44:05 mail postfix/smtp[12271]: Untrusted TLS connection established to 172.18.1.11[172.18.1.11]:25: TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)
Jul 28 07:44:10 mail postfix/smtp[12271]: 3xJd7n0QgSz110M: to=<j.wallinger@bspa.de>, relay=172.18.1.11[172.18.1.11]:25, delay=5.1, delays=0/0.02/0.1/5, dsn=2.1.5, status=deliverable (250 2.1.5 Recipient OK)
Jul 28 07:44:10 mail postfix/qmgr[12176]: 3xJd7n0QgSz110M: removed
Jul 28 07:44:11 mail postgrey[789]: action=pass, reason=client whitelist, client_name=itexchange16.itbspa.local, client_address=192.168.116.200, sender=ebenbeck@itbspa.de, recipient=J.Wallinger@bspa.de
Jul 28 07:44:11 mail postfix/smtpd[12265]: NOQUEUE: reject: RCPT from itexchange16.itbspa.local[192.168.116.200]: 450 4.1.1 <J.Wallinger@bspa.de>: Recipient address rejected: unverified address: Address verification in progress; from=<ebenbeck@itbspa.de> to=<J.Wallinger@bspa.de> proto=ESMTP helo=<webmail.itbspa.de>
Jul 28 07:44:11 mail postfix/smtpd[12265]: disconnect from itexchange16.itbspa.local[192.168.116.200] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6
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Re: Strange behavior Postfix 3.1.4 address verification

Wietse Venema
In reply to this post by Waschl
Waschl:
> enable_original_recipient = no

Remove that. It prevents address verification of an aliased address
([hidden email] -> [hidden email]) as it prevents Postfix from
saving the verify result under the address that existed before alias
expansion ([hidden email]).

This needs to be documented somewhere.

        Wietse
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Re: Strange behavior Postfix 3.1.4 address verification

Waschl
Thank you very much!

Greetings from Germany
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