Dear, I've an UPS that should send me email in case of problems. The email do not arrive because in the log I see "lost connection after HELO".
I added debug_peer_list to my main.cf to debug the ups connection. Is there a way to solve the problem? May 28 09:13:15 genio postfix/postscreen[31258]: CONNECT from [192.168.145.19]:51917 t o [192.168.146.39]:25 May 28 09:13:15 genio postfix/postscreen[31258]: WHITELISTED [192.168.145.19]:51917 May 28 09:13:15 genio postfix/smtpd[31295]: connect from ups-ced.domain.net[192.168.145.19] May 28 09:13:15 genio postfix/smtpd[31295]: smtp_stream_setup: maxtime=300 enable_dead line=0 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.domain.net ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.domain.net ~? [::ffff:127.0.0.0]/104 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.domain.net ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_e xceptions: 192.168.145.19 ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.domain.net ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.domain.net[192.168.145.19]: 220 genio.domain.net ESMTP Postfix (Debian/GNU) ay 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_create: SASL service=smtp, realm=(null) May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: noanonymous May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: Connecting May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: VERSION?1?2 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?PLAIN?plaintext May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: plaintext May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?DIGEST-MD5?dictionary?active?mutual-auth May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: dictionary May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: active May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: mutual-auth May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply MECH?CRAM-MD5?dictionary?active May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: dictionary May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: active May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?LOGIN?plaintext May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: plaintext May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: SPID?22734 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: COOKIE?30c2eef14595100fc106f0be90d07d16 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: DONE May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: PLAIN May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: DIGEST-MD5 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: CRAM-MD5 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: LOGIN May 28 09:13:15 genio postfix/smtpd[31295]: < ups-ced.domain.net[192.168.145.19]: EHLO May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.domain.net[192.168.145.19]: 501 Syntax: EHLO hostname May 28 09:13:15 genio postfix/smtpd[31295]: watchdog_pat: 0x558d6b58d9f0 May 28 09:13:15 genio postfix/smtpd[31295]: < ups-ced.domain.net[192.168.145.19]: HELO May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.domain.net[192.168.145.19]: 501 Syntax: HELO hostname May 28 09:13:15 genio postfix/smtpd[31295]: watchdog_pat: 0x558d6b58d9f0 May 28 09:13:15 genio postfix/smtpd[31295]: smtp_get: EOF May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.domain.net ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? [::ffff:127.0.0.0]/104 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.domain.net ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.domain.net ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: lost connection after HELO from ups-ced.domain.net[192.168.145.19] May 28 09:13:15 genio postfix/smtpd[31295]: disconnect from ups-ced.domain.net[192.168.145.19] helo=0/1 ehlo=0/1 commands=0/2 May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: no_address_mappingsMay 28 09:13:15 genio postfix/postscreen[31258]: CONNECT from [192.168.145.19]:51917 t o [150.217.146.39]:25 May 28 09:13:15 genio postfix/postscreen[31258]: WHITELISTED [192.168.145.19]:51917 May 28 09:13:15 genio postfix/smtpd[31295]: connect from ups-ced.cerm.unifi.it[192.168.145.19] May 28 09:13:15 genio postfix/smtpd[31295]: smtp_stream_setup: maxtime=300 enable_dead line=0 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.cerm.unifi.it ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.cerm.unifi.it ~? [::ffff:127.0.0.0]/104 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.cerm.unifi.it ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_e xceptions: 192.168.145.19 ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_e xceptions: ups-ced.cerm.unifi.it ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 192.168.145.19 ~? 192.168.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.cerm.unifi.it[150.217.145.19]: 220 genio.cerm.unifi.it ESMTP Postfix (Debian/GNU) ay 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_create: SASL service=smtp, realm=(null) May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: noanonymous May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: Connecting May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: VERSION?1?2 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?PLAIN?plaintext May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: plaintext May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?DIGEST-MD5?dictionary?active?mutual-auth May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: dictionary May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: active May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: mutual-auth May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply MECH?CRAM-MD5?dictionary?active May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: dictionary May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: active May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: MECH?LOGIN?plaintext May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: plaintext May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: SPID?22734 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: COOKIE?30c2eef14595100fc106f0be90d07d16 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_connect: auth reply: DONE May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: PLAIN May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: DIGEST-MD5 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: CRAM-MD5 May 28 09:13:15 genio postfix/smtpd[31295]: xsasl_dovecot_server_mech_filter: keep mechanism: LOGIN May 28 09:13:15 genio postfix/smtpd[31295]: < ups-ced.cerm.unifi.it[150.217.145.19]: EHLO May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.cerm.unifi.it[150.217.145.19]: 501 Syntax: EHLO hostname May 28 09:13:15 genio postfix/smtpd[31295]: watchdog_pat: 0x558d6b58d9f0 May 28 09:13:15 genio postfix/smtpd[31295]: < ups-ced.cerm.unifi.it[150.217.145.19]: HELO May 28 09:13:15 genio postfix/smtpd[31295]: > ups-ced.cerm.unifi.it[150.217.145.19]: 501 Syntax: HELO hostname May 28 09:13:15 genio postfix/smtpd[31295]: watchdog_pat: 0x558d6b58d9f0 May 28 09:13:15 genio postfix/smtpd[31295]: smtp_get: EOF May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.cerm.unifi.it ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 150.217.145.19 ~? 127.0.0.0/8 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 150.217.145.19 ~? [::ffff:127.0.0.0]/104 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.cerm.unifi.it ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 150.217.145.19 ~? [::1]/128 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostname: smtpd_client_event_limit_exceptions: ups-ced.cerm.unifi.it ~? 150.217.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: match_hostaddr: smtpd_client_event_limit_exceptions: 150.217.145.19 ~? 150.217.145.0/24 May 28 09:13:15 genio postfix/smtpd[31295]: lost connection after HELO from ups-ced.cerm.unifi.it[150.217.145.19] May 28 09:13:15 genio postfix/smtpd[31295]: disconnect from ups-ced.cerm.unifi.it[150.217.145.19] helo=0/1 ehlo=0/1 commands=0/2 May 28 09:13:15 genio postfix/smtpd[31295]: name_mask: no_address_mappings -- ----------------------------------------------------------- Enrico Morelli System Administrator | Programmer | Web Developer CERM - Polo Scientifico via Sacconi, 6 - 50019 Sesto Fiorentino (FI) - ITALY ------------------------------------------------------------