# mail forwarding loop **URL:** \ **Category:** Gateway\ **Created:** [February 20, 2018, 5:41pm UTC](https://community.ciphermail.com/t/mail-forwarding-loop/599 "2018-02-20T17:41:27Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Stefan\_Gunther](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@Stefan\_Gunther](https://community.ciphermail.com/u/Stefan_Gunther)\ **Post date:** [February 20, 2018, 5:41pm UTC](https://community.ciphermail.com/t/mail-forwarding-loop/599/1 "2018-02-20T17:41:27Z")
Good evening, after running a couple of days, the ciphermail system at a customers site complains about a mail forwarding loop. The customers says that they didn't change anything, which seems to be true according to the timestamp of the configuration files. Even by running the smtpd daemon in verbose mode, I cannot figure ouut, what causes the problem. It seems to occur, when the email is reinjected by ciphermail (Version 3.3.1-0): Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 250 2.1.5 Ok Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \< localhost[127.0.0.1]: DATA Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 354 End data with \\.\\ Feb 20 18:15:27 ciphermail postfix/cleanup[1268]: B3E8440CE9: message-id=\<597517347.2.1519146791208.JavaMail.javamailuser(a)localhost\> Feb 20 18:15:27 ciphermail postfix/qmgr[1231]: B3E8440CE9: from=\, size=12829, nrcpt=1 (queue active) Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: status Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: status Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute value: 0 Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: reason Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: reason Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute value: (end) Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: (list terminator) Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: (end) Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 250 2.0.0 Ok: queued as B3E8440CE9 Feb 20 18:15:27 ciphermail postfix/smtp[1269]: B3E8440CE9: to=\, relay=127.0.0.1[127.0.0.1]:10025, delay=0.18, delays=0.07/0.01/0.05/0.05, dsn=2.6.0, status=sent (250 2.6.0 Message received) Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \< localhost[127.0.0.1]: QUIT Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 221 2.0.0 Bye Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: match\_hostname: smtpd\_client\_event\_limit\_exceptions: localhost ~? 127.0.0.0/8 Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: match\_hostaddr: smtpd\_client\_event\_limit\_exceptions: 127.0.0.1 ~? 127.0.0.0/8 Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: master\_notify: status 1 Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: connection closed Feb 20 18:15:28 ciphermail postfix/smtpd[1270]: 3462140CEC: client=localhost[127.0.0.1], orig\_client=localhost[127.0.0.1] Feb 20 18:15:28 ciphermail postfix/cleanup[1271]: 3462140CEC: message-id=\<597517347.2.1519146791208.JavaMail.javamailuser(a)localhost\> Feb 20 18:15:28 ciphermail postfix/qmgr[1231]: 3462140CEC: from=\, size=10553, nrcpt=1 (queue active) Feb 20 18:15:28 ciphermail postfix/local[1272]: 3462140CEC: to=\, relay=local, delay=0.04, delays=0.03/0.01/0/0.01, dsn=5.4.6, status=bounced (mail forwarding loop for edifact(a)DOMAIN.ag) Feb 20 18:15:28 ciphermail postfix/cleanup[1268]: 3CCA940CF3: message-id=\<20180220171528.3CCA940CF3(a)ciphermail.DOMAIN.ag\> Feb 20 18:15:28 ciphermail postfix/qmgr[1231]: 3CCA940CF3: from=\<\>, size=12508, nrcpt=1 (queue active) Feb 20 18:15:28 ciphermail postfix/bounce[1273]: 3462140CEC: sender non-delivery notification: 3CCA940CF3 Feb 20 18:15:28 ciphermail postfix/smtp[1275]: 3CCA940CF3: to=\, relay=smtp.mailbox.org[80.241.60.196]:465, delay=0.33, delays=0/0.01/0.17/0.14, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 83ACD11F9) /etc/postfix/main.cf djigzo\_myhostname = ciphermail.DOMAIN.ag djigzo\_mydestination = DOMAIN.ag djigzo\_mynetworks = 127.0.0.1/32 djigzo\_relayhost = smtp.mailbox.org djigzo\_relayhost\_mx\_lookup = djigzo\_relayhost\_port = 25 djigzo\_relay\_domains = DOMAIN.ag djigzo\_before\_filter\_message\_size\_limit = 102400000 djigzo\_after\_filter\_message\_size\_limit = 102400000 djigzo\_mailbox\_size\_limit = 102400000 djigzo\_smtp\_helo\_name = djigzo\_relay\_transport\_host = 127.0.0.1 djigzo\_relay\_transport\_host\_mx\_lookup = djigzo\_relay\_transport\_host\_port = 25 djigzo\_reject\_unverified\_recipient = djigzo\_unverified\_recipient\_reject\_code = 450 djigzo\_parent\_domain\_matches\_subdomains = djigzo\_rbl\_clients = myhostname = ${djigzo\_myhostname} mydestination = ciphermail, $myhostname, ubuntu-2gb-nbg1-dc3-1, localhost.localdomain, localhost, ${djigzo\_mydestination} mynetworks = 127.0.0.0/8, 91.206.61.238/32, ${djigzo\_mynetworks} relay\_domains = ${djigzo\_relay\_domains} parent\_domain\_matches\_subdomains = ${djigzo\_parent\_domain\_matches\_subdomains} smtp\_helo\_name = ${djigzo\_smtp\_helo\_name?$djigzo\_smtp\_helo\_name}${djigzo\_smtp\_helo\_name:${myhostname}} relay\_transport = relay${djigzo\_relay\_transport\_host?:${djigzo\_relay\_transport\_host\_mx\_lookup:[}${djigzo\_relay\_transport\_host}${djigzo\_relay\_transport\_host\_mx\_lookup:]}:${djigzo\_relay\_transport\_host\_port}} #relayhost = ${djigzo\_relayhost\_mx\_lookup:${djigzo\_relayhost?[}}${djigzo\_relayhost}${djigzo\_relayhost\_mx\_lookup:${djigzo\_relayhost?]}}${djigzo\_relayhost?:${djigzo\_relayhost\_port}} relayhost = smtp.mailbox.org:465 smtp\_tls\_wrappermode = yes smtp\_tls\_security\_level = encrypt smtpd\_recipient\_restrictions = permit\_mynetworks permit\_sasl\_authenticated reject\_unauth\_destination reject\_invalid\_hostname reject\_unknown\_sender\_domain reject\_unknown\_recipient\_domain     ${djigzo\_rbl\_clients}     ${djigzo\_reject\_unverified\_recipient? reject\_unverified\_recipient} smtpd\_discard\_ehlo\_keywords = silent-discard VRFY ETRN DSN unverified\_recipient\_reject\_code = ${djigzo\_unverified\_recipient\_reject\_code} compatibility\_level=2 smtpd\_banner = $myhostname ESMTP $mail\_name biff = no append\_dot\_mydomain = no readme\_directory = no smtpd\_relay\_restrictions = permit\_mynetworks permit\_sasl\_authenticated defer\_unauth\_destination mydomain = gpg.ag alias\_maps = hash:/etc/aliases alias\_database = hash:/etc/aliases mailbox\_transport = cyrus content\_filter = djigzo:[127.0.0.1]:10025 recipient\_delimiter = + mailbox\_size\_limit = ${djigzo\_mailbox\_size\_limit} message\_size\_limit = ${djigzo\_after\_filter\_message\_size\_limit} inet\_interfaces = all inet\_protocols = ipv4 /etc/postfix/master.cf smtp inet n - y - - smtpd -v smtps inet n - - - - smtpd    -o smtpd\_tls\_wrappermode=yes    -o smtpd\_sasl\_auth\_enable=yes #628 inet n - y - - qmqpd pickup unix n - y 60 1 pickup cleanup unix n - y - 0 cleanup qmgr unix n - n 300 1 qmgr #qmgr unix n - n 300 1 oqmgr tlsmgr unix - - y 1000? 1 tlsmgr rewrite unix - - y - - trivial-rewrite bounce unix - - y - 0 bounce defer unix - - y - 0 bounce trace unix - - y - 0 bounce verify unix - - y - 1 verify flush unix n - y 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - y - - smtp relay unix - - y - - smtp # -o smtp\_helo\_timeout=5 -o smtp\_connect\_timeout=5 showq unix n - y - - showq error unix - - y - - error retry unix - - y - - error discard unix - - y - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - y - - lmtp anvil unix - - y - 1 anvil scache unix - - y - 1 scache maildrop unix - n n - - pipe cyrus unix - n n - - pipe   user=cyrus argv=/usr/lib/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user} uucp unix - n n - - pipe   flags=Fqhu user=uucp argv=uux -r -n -z -a$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} djigzo unix - - n - 4 smtp             -o smtp\_send\_xforward\_command=yes             -o disable\_dns\_lookups=yes             -o smtp\_generic\_maps=             -o smtp\_tls\_wrappermode=no             -o smtp\_tls\_security\_level=none # cleanup for reinject so we can set the hopcount\_limit differently for the reinjection port cleanup\_reinject unix n - - - 0 cleanup             -o hopcount\_limit=100 127.0.0.1:10026 inet n - n - 10 smtpd             -o content\_filter=             -o receive\_override\_options=no\_unknown\_recipient\_checks,no\_header\_body\_checks,no\_milters             -o smtpd\_helo\_restrictions=             -o smtpd\_client\_restrictions=             -o smtpd\_sender\_restrictions=             -o smtpd\_recipient\_restrictions=permit\_mynetworks,reject             -o mynetworks=127.0.0.0/8             -o smtpd\_authorized\_xforward\_hosts=127.0.0.0/8             -o smtpd\_authorized\_xclient\_hosts=127.0.0.0/8             -o cleanup\_service\_name=cleanup\_reinject Thanks for any hints & suggestions, Stefan ---
**Author:** ![martijn](https://dub1.discourse-cdn.com/flex017/user_avatar/community.ciphermail.com/martijn/32/127_2.png) [@martijn](https://community.ciphermail.com/u/martijn)\ **Post date:** [February 21, 2018, 8:07am UTC](https://community.ciphermail.com/t/mail-forwarding-loop/599/2 "2018-02-21T08:07:40Z")
> after running a couple of days, the ciphermail system at a customers > site complains about a mail forwarding loop. The customers says that > they didn't change anything, which seems to be true according to the > timestamp of the configuration files. > > Even by running the smtpd daemon in verbose mode, I cannot figure > ouut, what causes the problem. It seems to occur, when the email is > reinjected by ciphermail (Version 3.3.1-0): Hard to tell from the logs. It looks like this system is configured to accept local email, i.e., user mailboxes are stored in the system. The email is delivered to the mailboxes using the local daemon process. according to [Postfix manual - local(8)](http://www.postfix.org/local.8.html) the local delivery daemon has a loop detection mechanism using a Delivered-To header. Perhaps the message already contains a Delivered-To header? "In order to stop mail forwarding loops early, the software adds an optional Delivered-To: header with the final envelope recipient address. If mail arrives for a recipient that is already listed in a Delivered-To: header, the message is bounced." Is the email forwarded from some mailbox (for example with Fetchmail?) Kind regards, Martijn Brinkers > **···** > > On 20-02-18 18:41, Stefan Günther via Users wrote: > > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 250 2.1.5 Ok > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \< localhost[127.0.0.1]: DATA > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 354 End data with \\.\\ > > Feb 20 18:15:27 ciphermail postfix/cleanup[1268]: B3E8440CE9: message-id=\<597517347.2.1519146791208.JavaMail.javamailuser(a)localhost\> > > Feb 20 18:15:27 ciphermail postfix/qmgr[1231]: B3E8440CE9: from=\, size=12829, nrcpt=1 (queue active) > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: status > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: status > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute value: 0 > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: reason > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: reason > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute value: (end) > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: public/cleanup socket: wanted attribute: (list terminator) > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: input attribute name: (end) > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 250 2.0.0 Ok: queued as B3E8440CE9 > > Feb 20 18:15:27 ciphermail postfix/smtp[1269]: B3E8440CE9: to=\, relay=127.0.0.1[127.0.0.1]:10025, delay=0.18, delays=0.07/0.01/0.05/0.05, dsn=2.6.0, status=sent (250 2.6.0 Message received) > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \< localhost[127.0.0.1]: QUIT > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: \> localhost[127.0.0.1]: 221 2.0.0 Bye > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: match\_hostname: smtpd\_client\_event\_limit\_exceptions: localhost ~? 127.0.0.0/8 > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: match\_hostaddr: smtpd\_client\_event\_limit\_exceptions: 127.0.0.1 ~? 127.0.0.0/8 > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: master\_notify: status 1 > > Feb 20 18:15:27 ciphermail postfix/smtpd[1265]: connection closed > > Feb 20 18:15:28 ciphermail postfix/smtpd[1270]: 3462140CEC: client=localhost[127.0.0.1], orig\_client=localhost[127.0.0.1] > > Feb 20 18:15:28 ciphermail postfix/cleanup[1271]: 3462140CEC: message-id=\<597517347.2.1519146791208.JavaMail.javamailuser(a)localhost\> > > Feb 20 18:15:28 ciphermail postfix/qmgr[1231]: 3462140CEC: from=\, size=10553, nrcpt=1 (queue active) > > Feb 20 18:15:28 ciphermail postfix/local[1272]: 3462140CEC: to=\, relay=local, delay=0.04, delays=0.03/0.01/0/0.01, dsn=5.4.6, status=bounced (mail forwarding loop for edifact(a)DOMAIN.ag) > > Feb 20 18:15:28 ciphermail postfix/cleanup[1268]: 3CCA940CF3: message-id=\<20180220171528.3CCA940CF3(a)ciphermail.DOMAIN.ag\> > > Feb 20 18:15:28 ciphermail postfix/qmgr[1231]: 3CCA940CF3: from=\<\>, size=12508, nrcpt=1 (queue active) > > Feb 20 18:15:28 ciphermail postfix/bounce[1273]: 3462140CEC: sender non-delivery notification: 3CCA940CF3 > > Feb 20 18:15:28 ciphermail postfix/smtp[1275]: 3CCA940CF3: to=\, relay=smtp.mailbox.org[80.241.60.196]:465, delay=0.33, delays=0/0.01/0.17/0.14, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 83ACD11F9) > > > > /etc/postfix/main.cf > > djigzo\_myhostname = ciphermail.DOMAIN.ag > > djigzo\_mydestination = DOMAIN.ag > > djigzo\_mynetworks = 127.0.0.1/32 > > djigzo\_relayhost = smtp.mailbox.org > > djigzo\_relayhost\_mx\_lookup = > > djigzo\_relayhost\_port = 25 > > djigzo\_relay\_domains = DOMAIN.ag > > djigzo\_before\_filter\_message\_size\_limit = 102400000 > > djigzo\_after\_filter\_message\_size\_limit = 102400000 > > djigzo\_mailbox\_size\_limit = 102400000 > > djigzo\_smtp\_helo\_name = > > djigzo\_relay\_transport\_host = 127.0.0.1 > > djigzo\_relay\_transport\_host\_mx\_lookup = > > djigzo\_relay\_transport\_host\_port = 25 > > djigzo\_reject\_unverified\_recipient = > > djigzo\_unverified\_recipient\_reject\_code = 450 > > djigzo\_parent\_domain\_matches\_subdomains = > > djigzo\_rbl\_clients = > > myhostname = ${djigzo\_myhostname} > > mydestination = ciphermail, $myhostname, ubuntu-2gb-nbg1-dc3-1, localhost.localdomain, localhost, ${djigzo\_mydestination} > > mynetworks = 127.0.0.0/8, 91.206.61.238/32, ${djigzo\_mynetworks} > > relay\_domains = ${djigzo\_relay\_domains} > > parent\_domain\_matches\_subdomains = ${djigzo\_parent\_domain\_matches\_subdomains} > > smtp\_helo\_name = ${djigzo\_smtp\_helo\_name?$djigzo\_smtp\_helo\_name}${djigzo\_smtp\_helo\_name:${myhostname}} > > relay\_transport = relay${djigzo\_relay\_transport\_host?:${djigzo\_relay\_transport\_host\_mx\_lookup:[}${djigzo\_relay\_transport\_host}${djigzo\_relay\_transport\_host\_mx\_lookup:]}:${djigzo\_relay\_transport\_host\_port}} > > #relayhost = ${djigzo\_relayhost\_mx\_lookup:${djigzo\_relayhost?[}}${djigzo\_relayhost}${djigzo\_relayhost\_mx\_lookup:${djigzo\_relayhost?]}}${djigzo\_relayhost?:${djigzo\_relayhost\_port}} > > relayhost = smtp.mailbox.org:465 > > smtp\_tls\_wrappermode = yes > > smtp\_tls\_security\_level = encrypt > > smtpd\_recipient\_restrictions = permit\_mynetworks permit\_sasl\_authenticated reject\_unauth\_destination reject\_invalid\_hostname reject\_unknown\_sender\_domain reject\_unknown\_recipient\_domain > >      ${djigzo\_rbl\_clients} > >      ${djigzo\_reject\_unverified\_recipient? reject\_unverified\_recipient} > > smtpd\_discard\_ehlo\_keywords = silent-discard VRFY ETRN DSN > > unverified\_recipient\_reject\_code = ${djigzo\_unverified\_recipient\_reject\_code} > > compatibility\_level=2 > > smtpd\_banner = $myhostname ESMTP $mail\_name > > biff = no > > append\_dot\_mydomain = no > > readme\_directory = no > > smtpd\_relay\_restrictions = permit\_mynetworks permit\_sasl\_authenticated defer\_unauth\_destination > > mydomain = gpg.ag > > alias\_maps = hash:/etc/aliases > > alias\_database = hash:/etc/aliases > > mailbox\_transport = cyrus > > content\_filter = djigzo:[127.0.0.1]:10025 > > recipient\_delimiter = + > > mailbox\_size\_limit = ${djigzo\_mailbox\_size\_limit} > > message\_size\_limit = ${djigzo\_after\_filter\_message\_size\_limit} > > inet\_interfaces = all > > inet\_protocols = ipv4 > > > > /etc/postfix/master.cf > > smtp inet n - y - - smtpd -v > > smtps inet n - - - - smtpd > >     -o smtpd\_tls\_wrappermode=yes > >     -o smtpd\_sasl\_auth\_enable=yes > > #628 inet n - y - - qmqpd > > pickup unix n - y 60 1 pickup > > cleanup unix n - y - 0 cleanup > > qmgr unix n - n 300 1 qmgr > > #qmgr unix n - n 300 1 oqmgr > > tlsmgr unix - - y 1000? 1 tlsmgr > > rewrite unix - - y - - trivial-rewrite > > bounce unix - - y - 0 bounce > > defer unix - - y - 0 bounce > > trace unix - - y - 0 bounce > > verify unix - - y - 1 verify > > flush unix n - y 1000? 0 flush > > proxymap unix - - n - - proxymap > > proxywrite unix - - n - 1 proxymap > > smtp unix - - y - - smtp > > relay unix - - y - - smtp > > # -o smtp\_helo\_timeout=5 -o smtp\_connect\_timeout=5 > > showq unix n - y - - showq > > error unix - - y - - error > > retry unix - - y - - error > > discard unix - - y - - discard > > local unix - n n - - local > > virtual unix - n n - - virtual > > lmtp unix - - y - - lmtp > > anvil unix - - y - 1 anvil > > scache unix - - y - 1 scache > > maildrop unix - n n - - pipe > > cyrus unix - n n - - pipe > >    user=cyrus argv=/usr/lib/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user} > > uucp unix - n n - - pipe > >    flags=Fqhu user=uucp argv=uux -r -n -z -a$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} > > djigzo unix - - n - 4 smtp > >              -o smtp\_send\_xforward\_command=yes > >              -o disable\_dns\_lookups=yes > >              -o smtp\_generic\_maps= > >              -o smtp\_tls\_wrappermode=no > >              -o smtp\_tls\_security\_level=none > > > > # cleanup for reinject so we can set the hopcount\_limit differently for the reinjection port > > cleanup\_reinject unix n - - - 0 cleanup > >              -o hopcount\_limit=100 > > > > 127.0.0.1:10026 inet n - n - 10 smtpd > >              -o content\_filter= > >              -o receive\_override\_options=no\_unknown\_recipient\_checks,no\_header\_body\_checks,no\_milters > >              -o smtpd\_helo\_restrictions= > >              -o smtpd\_client\_restrictions= > >              -o smtpd\_sender\_restrictions= > >              -o smtpd\_recipient\_restrictions=permit\_mynetworks,reject > >              -o mynetworks=127.0.0.0/8 > >              -o smtpd\_authorized\_xforward\_hosts=127.0.0.0/8 > >              -o smtpd\_authorized\_xclient\_hosts=127.0.0.0/8 > >              -o cleanup\_service\_name=cleanup\_reinject > > > > Thanks for any hints & suggestions, > > > > Stefan > > > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > > Users mailing list > > Users(a)lists.djigzo.com > > [https://lists.djigzo.com/lists/listinfo/users](https://lists.djigzo.com/lists/listinfo/users) > > -- > CipherMail email encryption > > Email encryption with support for S/MIME, OpenPGP, PDF encryption and > secure webmail pull. > > > **[CipherMail email encryption and digital signatures](https://www.ciphermail.com)** > > > > Easy to use server-side email encryption for automatic encryption and digital signing of email. > > Twitter: [http://twitter.com/CipherMail](http://twitter.com/CipherMail)