Hello, for around 5% of our outgoing mails we get the message: "lost connection with <<mail-provider>> while sending end of data -- message may be sent more than once"
All mails go through our mail provider. There are no dependencies on the size of the mail or the mail address. It takes a few hours, then the mails are sent. Unfortunately, from these mails, some mails are send two or three times - as the message says. # cat /proc/sys/net/ipv4/tcp_window_scaling 0 # cat /proc/sys/net/ipv4/tcp_timestamps 0 # cat /proc/sys/net/ipv4/tcp_sack 1 MTU = 1500 # cat /proc/sys/net/core/[rw]mem_max 256960 256960 # cat /proc/sys/net/core/[rw]mem_default 256960 256960 # postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = all local_destination_concurrency_limit = 5 local_destination_recipient_limit = 200 mail_owner = postfix mailbox_command = /usr/bin/procmail -a "$USER" mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man message_size_limit = 35389440 mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, kinderkrankenhaus.net mydomain = akk.local myhostname = postfix.akk.local myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix/README_FILES relayhost = smtp.1und1.de sample_directory = /usr/share/doc/postfix/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_data_xfer_timeout = 600 smtp_generic_maps = hash:/etc/postfix/generic smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_pwds smtp_sasl_security_options = noanonymous unknown_local_recipient_reject_code = 550 Firewall: FortiGate 110C Many thanks in advance. Andreas Barchfeld ********************************************************************** AKK Altonaer Kinderkrankenhaus gGmbH Akademisches Lehrkrankenhaus der Universitaet Hamburg Geschaeftsfuehrung: Christiane Dienhold Registergericht: Amtsgericht Hamburg HRB 87427 Sitz der Gesellschaft: Hamburg HSH Nordbank AG - BLZ 210 500 00 - Kontonummer 1000103405 ********************************************************************** Diese E-Mail enthaelt vertrauliche und/oder rechtlich geschuetzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtuemlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. This E-Mail contains confidential and/or proprietary information. If you are not the intended recipient, or if you received the E-Mail by mistake, we ask you to notify the sender immediately and destroy this E-Mail. The unauthorized reproduction or distribution of this E-Mail is prohibited. **********************************************************************
