warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe
Hello I've been receiving lots of errors in mail.log Mar 7 11:49:47 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:50:13 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:50:56 mail postfix/smtpd[94257]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:51:13 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:51:57 mail postfix/smtpd[92615]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:24 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:52:31 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:32 mail postfix/smtpd[92629]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:53:08 mail postfix/smtpd[94255]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Any idea what this means? The customer has been reporting delayed delivery of email. Any tips on what I should look out for in the configuration? Rishi
Re: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe
Maybe this helps (just googled it...) http://tech.groups.yahoo.com/group/postfix-users/message/273461 Regards. On Thu, Mar 7, 2013 at 1:40 PM, Rishi rishigang...@gmail.com wrote: Hello I've been receiving lots of errors in mail.log Mar 7 11:49:47 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:50:13 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:50:56 mail postfix/smtpd[94257]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:51:13 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:51:57 mail postfix/smtpd[92615]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:24 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:52:31 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:32 mail postfix/smtpd[92629]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:53:08 mail postfix/smtpd[94255]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Any idea what this means? The customer has been reporting delayed delivery of email. Any tips on what I should look out for in the configuration? Rishi
Re: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe
On 3/7/2013 10:40 AM, Rishi wrote: Hello I've been receiving lots of errors in mail.log Mar 7 11:49:47 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:50:13 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:50:56 mail postfix/smtpd[94257]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:51:13 mail postfix/smtpd[92520]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:51:57 mail postfix/smtpd[92615]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:24 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Mar 7 11:52:31 mail postfix/smtpd[92555]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:52:32 mail postfix/smtpd[92629]: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe Mar 7 11:53:08 mail postfix/smtpd[94255]: warning: network_biopair_interop: error writing 27 bytes to the network: Broken pipe Any idea what this means? This happens when a client sending you mail establishes a TLS connection, and then drops the connection before postfix can respond. The customer has been reporting delayed delivery of email. The above error Any tips on what I should look out for in the configuration? First examine your logs to see which clients this message is associated with by searching for the proceeding message from the same smtpd process. Sometimes spam bots will give this message; those can be ignored. If it's from just one or two non-spam clients, they may have a broken TLS implementation. You can disable TLS for specific clients with smtpd_discard_ehlo_keyword_address_maps. http://www.postfix.org/postconf.5.html#smtpd_discard_ehlo_keyword_address_maps -- Noel Jones
Re: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe
Any tips on what I should look out for in the configuration? First examine your logs to see which clients this message is associated with by searching for the proceeding message from the same smtpd process. Not sure if this helps, but I just ran a quick command on the logs. bzgrep network_biopair_interop mail.log.?.bz2 | wc -l And got this number: 9111 Is that too high? These are from logs dated since Feb 25th till to March 5th
Re: warning: network_biopair_interop: error writing 37 bytes to the network: Broken pipe
On 3/7/2013 12:03 PM, Rishi wrote: Any tips on what I should look out for in the configuration? First examine your logs to see which clients this message is associated with by searching for the proceeding message from the same smtpd process. Not sure if this helps, but I just ran a quick command on the logs. bzgrep network_biopair_interop mail.log.?.bz2 | wc -l And got this number: 9111 Is that too high? These are from logs dated since Feb 25th till to March 5th The number is meaningless. You need to check the logs and find which clients are causing this error: if it looks like a spammer, just ignore it (or firewall them); if it's some legit client, disable TLS for that client. And schedule a postfix upgrade while you're at it. -- Noel Jones
