What do you mean "security software"? It's postfix which adds 250-PIPELINING...
Here is postfconf -n output: alias_maps = hash:/etc/postfix/aliases alternate_config_directories = /etc/postfix_out always_add_missing_headers = no append_at_myorigin = no append_dot_mydomain = no best_mx_transport = discard bounce_queue_lifetime = 0d command_directory = /usr/local/sbin config_directory = /etc/postfix daemon_directory = /usr/lib64/postfix data_directory = /var/lib/postfix default_destination_concurrency_limit = 400 default_process_limit = 60 fallback_transport = filter html_directory = /usr/share/doc/postfix/html in_flow_delay = 1 inet_interfaces = all initial_destination_concurrency = 400 local_recipient_maps = mail_owner = postfix mailq_path = /usr/bin/mailq manpage_directory = /usr/share/man maximal_backoff_time = 30 mydestination = $myhostname, localhost.$mydomain, $mydomain, HUB.localdomain, HUB1.relay.com mydomain = relay.com myhostname = relay.com mynetworks = 127.0.0.0/8, 81.52.180.0/24 mynetworks_style = host myorigin = relay.com newaliases_path = /usr/bin/newaliases queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix/README_FILES receive_override_options = no_address_mappings sample_directory = /etc/postfix sendmail_path = /usr/local/sbin/sendmail.postfix setgid_group = postdrop smtp_connection_cache_on_demand = no smtpd_banner = $myhostname ESMTP $mail_name ($mail_version) unknown_local_recipient_reject_code = 450 Le mercredi 20 juin 2012 à 09:49 -0400, Wietse Venema a écrit : > Wael MANAI: > > Hi, > > > > Here is my problem. I try to send one message which is refused by remote > > mailer (at MAIL FROM Level) with error: > > > > 552 Requested mail action aborted: exceeded storage allocation > > > > wireshark tcp stream: > > > > 220 81.52.180.21 ESMTP > > EHLO relay.com > > 250 81.52.180.21[relay.com] Please to meet you > > 250-PIPELINING > > MAIL FROM:<+33612345678/TYPE=p...@origin.com> > > 552 Requested mail action aborted: exceeded storage allocation > > Some "security" software corrupts the SMTP protocol by sending > "250-PIPELINING" before the "552" response. The solution is to fix > or remove that "security" software. > > Wietse
