Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 05/10/2011 08:37 PM, Timo Sirainen wrote: On 10.5.2011, at 21.32, Andrzej Adam Filip wrote: Do you intent any time soon to provide some hook to alow MTA reject in reply to RCPT TO: (in SMTP session) messages to over quota mailboxes? Can you give specifics of what I'd need to do for that? I remember there is some sendmail protocol that is also supported by Postfix (I think), but I can't remember specifics (and a bit lazy to google for it). v2.0 would finally allow easily implementing such service. Hmm. I guess such service would both have to check if the user exists and also the quota value, and give errors about both of them. Both sendmail and postfix support milter protocol/API. Unlike API provided by library the protocol is not officially documented. Sendmail/sendmail.cf could also use trivial socket map protocol (query-response) [sample Perl scripts implementing it are in contrib directory of sendmail distribution]. IMHO the best honeypot for developers (especially without dovecot expertise) would be simple library providing two functions email_address - state( does_not_exist, under_quota, over_quota) email_address, message_size - ( does_not_exist, ).
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
Here is the logs: May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: save failed to INBOX: Not enough disk space May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: rejected: Not enough disk space May 8 06:00:36 mailserver postfix/pickup[27640]: D8B242F9E1: uid=150 from= May 8 06:00:36 mailserver postfix/pipe[27978]: 4B3A72F8C0: to=saz...@vendys.net, relay=dovecot, delay=11, delays=11/0.02/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service) May 8 06:00:36 mailserver postfix/qmgr[18807]: 4B3A72F8C0: removed Problem is, that: 1. spool HAVE ENOUGH space (so postfix has no problem keeps the message in the spool) 2. postfix forward message to dovecot 3. dovecot accept message, but can not deliver to /home/vmail, because there is no space :-) 4. so dovecot lost/delete/refuse message and tells postfix - everything is Ok ? 5. postfix cleans qmgr (bacause message has been forward to LDA succesfully I suppose :-) ) Thanks Peter On Mon, 2011-05-09 at 17:37 +0200, Petr Svacina wrote: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! Dovecot deliver should fail with tempfail, which Postfix should notice and forward to the original sender. If deliver doesn't return tempfail, it's a bug. I'd like to see Postfix logs of when this problem happens. -- Tato zprava byla prohledana na vyskyt viru a nebezpecneho obsahu antivirovym systemem MailScanner a zda se byt cista.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 10/05/2011 14:44, Petr Svacina wrote: Here is the logs: May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: save failed to INBOX: Not enough disk space May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: rejected: Not enough disk space May 8 06:00:36 mailserver postfix/pickup[27640]: D8B242F9E1: uid=150 from= May 8 06:00:36 mailserver postfix/pipe[27978]: 4B3A72F8C0: to=saz...@vendys.net, relay=dovecot, delay=11, delays=11/0.02/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service) May 8 06:00:36 mailserver postfix/qmgr[18807]: 4B3A72F8C0: removed To me message ID : D8B242F9E1 seems a bounce to the sender, if that's correct I don't see troubles with that.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
Hi, Yes know, I know, that ANY OUT of SPACE problem is SPECIALLY administrator's problem and please check my previous answer ... Out of space on the disk is my problem, but I want to know, why postfix receive message to it's spool (another partition - lot of space) and when postfix uses dovecot to deliver message to the inbox, where is NO space, why message is lost and removed from qmgr. thanks a lot :-) Peter On 5/9/2011 10:37 AM, Petr Svacina wrote: Hi, Please I have a question: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! How can I solve this ? I don't want tu use quota and the disk was full, because of the other problem This is more of a mail server admin 101 issue than a Dovecot issue. Putting your log, mail spool, and user mail directories on separate partitions, physical disks, or SAN LUNs will prevent such a problem from occurring 99% of the time, assuming you have planned and sized your storage appropriately for your environment. At minimum you should have your spool and user mail storage on different partitions. To avoid this issue the other 1% of the time, use monitoring or log summary tools to notify you of disk space usage so you know when you're close to running out of space. For instance, I receive the following as part of my daily logwatch summary on my personal domain MX: FilesystemSize Used Avail Use% Mounted on /dev/sda2 33G 4.2G 28G 14% / /dev/sda1 92M 8.4M 79M 10% /boot /dev/sda6 94G 1.2G 92G 2% /home /dev/sda7 94G 25G 70G 26% /samba Note that I have both system logs and the mail spool on / but user mail directories in /home. This setup is acceptable for a low volume server. For a high volume server the mail spool should be on a dedicated partition, as well as user mail dirs. If you already know all of this and an unforeseen issue caused your problem, accept my apologies for preaching to the choir. -- Stan -- Tato zprava byla prohledana na vyskyt viru a nebezpecneho obsahu antivirovym systemem MailScanner a zda se byt cista.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
Hi, No. No any version of the sieve us used On 05/09/2011 05:37 PM, Petr Svacina wrote: Hi, Please I have a question: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! How can I solve this ? I don't want tu use quota and the disk was full, because of the other problem Are you using any plugins, like Sieve? Regards, Stephan. -- Tato zprava byla prohledana na vyskyt viru a nebezpecneho obsahu antivirovym systemem MailScanner a zda se byt cista.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 10.5.2011, at 15.44, Petr Svacina wrote: May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: save failed to INBOX: Not enough disk space May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: rejected: Not enough disk space Oh, it's a rejection.. I guess it's because it's handled the same way as out of quota. Two things you can do: a) give -e parameter to deliver, so it exits with the proper code instead of sending a new rejected message via sendmail. (I think I should have made this the default in v2.0.. Maybe I could change it in v2.1.) b) quota_full_tempfail = yes to have it exit with tempfail rather than a permanent failure
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
Timo Sirainen t...@iki.fi wrote: On 10.5.2011, at 15.44, Petr Svacina wrote: May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: save failed to INBOX: Not enough disk space May 8 06:00:36 mailserver dovecot: deliver(saz...@vendys.net): msgid=3DEF56667E754F24B163C9767422C9A9@dlllk.local: rejected: Not enough disk space Oh, it's a rejection.. I guess it's because it's handled the same way as out of quota. Two things you can do: a) give -e parameter to deliver, so it exits with the proper code instead of sending a new rejected message via sendmail. (I think I should have made this the default in v2.0.. Maybe I could change it in v2.1.) b) quota_full_tempfail = yes to have it exit with tempfail rather than a permanent failure Do you intent any time soon to provide some hook to alow MTA reject in reply to RCPT TO: (in SMTP session) messages to over quota mailboxes? Exit code of deliver -e can only be used to reject message in reply to the final dot *for single recipient messages*. -- [plen: Andrew] Andrzej Adam Filip : a...@onet.eu Nachman's Rule: When it comes to foreign food, the less authentic the better. -- Gerald Nachman
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 10.5.2011, at 21.32, Andrzej Adam Filip wrote: Do you intent any time soon to provide some hook to alow MTA reject in reply to RCPT TO: (in SMTP session) messages to over quota mailboxes? Can you give specifics of what I'd need to do for that? I remember there is some sendmail protocol that is also supported by Postfix (I think), but I can't remember specifics (and a bit lazy to google for it). v2.0 would finally allow easily implementing such service. Hmm. I guess such service would both have to check if the user exists and also the quota value, and give errors about both of them.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On Mon, 2011-05-09 at 17:37 +0200, Petr Svacina wrote: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! Dovecot deliver should fail with tempfail, which Postfix should notice and forward to the original sender. If deliver doesn't return tempfail, it's a bug. I'd like to see Postfix logs of when this problem happens.
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 5/9/2011 10:37 AM, Petr Svacina wrote: Hi, Please I have a question: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! How can I solve this ? I don't want tu use quota and the disk was full, because of the other problem This is more of a mail server admin 101 issue than a Dovecot issue. Putting your log, mail spool, and user mail directories on separate partitions, physical disks, or SAN LUNs will prevent such a problem from occurring 99% of the time, assuming you have planned and sized your storage appropriately for your environment. At minimum you should have your spool and user mail storage on different partitions. To avoid this issue the other 1% of the time, use monitoring or log summary tools to notify you of disk space usage so you know when you're close to running out of space. For instance, I receive the following as part of my daily logwatch summary on my personal domain MX: FilesystemSize Used Avail Use% Mounted on /dev/sda2 33G 4.2G 28G 14% / /dev/sda1 92M 8.4M 79M 10% /boot /dev/sda6 94G 1.2G 92G 2% /home /dev/sda7 94G 25G 70G 26% /samba Note that I have both system logs and the mail spool on / but user mail directories in /home. This setup is acceptable for a low volume server. For a high volume server the mail spool should be on a dedicated partition, as well as user mail dirs. If you already know all of this and an unforeseen issue caused your problem, accept my apologies for preaching to the choir. -- Stan
Re: [Dovecot] Posfix and Dovecot (dovecot like LDA) and no space left on the disk
On 05/09/2011 05:37 PM, Petr Svacina wrote: Hi, Please I have a question: If my server is out of space (disk full) and the postfix is LDA, the new messages a deffered or refused,so postfix send 450 to sender ... But When I use dovecot (1.2.16) like LDA, postfix accept message (even there is no space), forward to dovecot, dovecot REFUSE the message and message is lost ! How can I solve this ? I don't want tu use quota and the disk was full, because of the other problem Are you using any plugins, like Sieve? Regards, Stephan.
