Re: How to stop postfix sending emails
Lists: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). That is a terrible configuration error. A host outage should never result in 5xx mail rejects. Wietse
Re: How to stop postfix sending emails
Maybe you can tell spam filter postfix to HOLD all mails to your domains and then just remove hold and postsuper -H ALL ? like this: http://wiki.zimbra.com/index.php?title=Irfan-Notes#Holding_the_Postfix_Queue_at_time_of_server_migration.2Fmaintenance and man 5 access and look for HOLD ? -- Eero
Re: How to stop postfix sending emails
Wietse Venema wrote: Lists: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). That is a terrible configuration error. A host outage should never result in 5xx mail rejects. Wietse I don't love it either but it is how MailEnable works when it can't access the box, it responds with - 550 5.7.1 Unable to relay for originallocalsen...@domain.co.nz (in reply to RCPT TO command)) Hopefully the MailEnable server won't be in the state where it can't access the boxes for long - i'm just trying to ensure no mail ends up lost.
Re: How to stop postfix sending emails
Lists: Wietse Venema wrote: Lists: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). That is a terrible configuration error. A host outage should never result in 5xx mail rejects. Wietse I don't love it either but it is how MailEnable works when it can't access the box, it responds with - 550 5.7.1 Unable to relay for originallocalsen...@domain.co.nz (in reply to RCPT TO command)) Don't we all love brain-dead systems. I recently added a translation mapping for SMTP server inputs. That was meant to map inputs from brain-dead SMTP clients into something that satisfies basic SMTP syntax rules. Perhaps I should also add a translation mapping for inputs from SMTP servers, so that in the future, one could replace the above reply by a 4xx class reply. Wietse
Re: How to stop postfix sending emails
Eero Volotinen wrote: Lists wrote: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). In order to prevent the loss of emails I was going to change the postfix config in the following way soft_bounce http://www.postfix.org/postconf.5.html#soft_bounce = yes Is this going to achieve what I need (i.e. that 550 responses are not treated as permenant and will try again). Alternatively I was considering stopping the spam server from sending out emails during the upgrade time but I am unsure how to alter the behaviour of postfix so that it receives in email but will then hold it in queue and not attempt to send on. Maybe you can tell spam filter postfix to HOLD all mails to your domains and then just remove hold and postsuper -H ALL ? -- Eero Yeah I just had a look at the postsuper -h ALL - it only seems to move emails present in the queues at that moment to the hold bin but doesn't put subsequent ones in their. Is there a way for it to keep moving them until the postsuper -r ALL is given?
Re: How to stop postfix sending emails
On 11/11/2009 7:14 PM, Wietse Venema wrote: Lists: Wietse Venema wrote: Lists: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). That is a terrible configuration error. A host outage should never result in 5xx mail rejects. Wietse I don't love it either but it is how MailEnable works when it can't access the box, it responds with - 550 5.7.1 Unable to relay for originallocalsen...@domain.co.nz (in reply to RCPT TO command)) Don't we all love brain-dead systems. I recently added a translation mapping for SMTP server inputs. That was meant to map inputs from brain-dead SMTP clients into something that satisfies basic SMTP syntax rules. Perhaps I should also add a translation mapping for inputs from SMTP servers, so that in the future, one could replace the above reply by a 4xx class reply. Wietse I dealt with a similar brain-dead relay destination by creating a never_reject transport that had soft bounce turned on. This worked pretty well, but only because I had a valid user list from the offender. Wouldn't that be about the same as what you describe above? -- Noel Jones
Re: How to stop postfix sending emails
Lists wrote: Hi All, We are doing an upgrade on the machine that holds the postboxes (mailenable) during the upgrade the server will need to be rebooted which renders the boxes unreachable. This causes a 550 error to be sent back to our spam catching server (running MailScanner spamassassin and postfix). In order to prevent the loss of emails I was going to change the postfix config in the following way soft_bounce http://www.postfix.org/postconf.5.html#soft_bounce = yes Is this going to achieve what I need (i.e. that 550 responses are not treated as permenant and will try again). Alternatively I was considering stopping the spam server from sending out emails during the upgrade time but I am unsure how to alter the behaviour of postfix so that it receives in email but will then hold it in queue and not attempt to send on. Thoughts appreciated. Thanks Kate How mad would everyone be if you just unplugged the Ethernet cable on the machine returning 550?
