February 2012 - dovecot

[Dovecot] dovecot freezes when trying to get mail from maildir with mail
by postmaster 21 Feb '12

21 Feb '12

I'm completely stumped by this problem and I've tried everything at present - including installing dovecot from scratch. The problem is that when trying to get email from the server -AND- there's email in the account, the pop3 or imap process freezes and no email is fetched. The crazy thing is, that it has been working perfectly, but suddenly I'm getting these freezes both when using telnet from localhost, roundcubemail on the same server and Seamonkey from another computer. Logging seems to work perfectly. For an account without email, dovecot finds the maildir++ and acts correctly. For an account -with- email, dovecot seems to find the maildir++, but also seems to try Namespace of which I haven't defined any. I've tried to get rawlog to work also, but that didn't work - the telnet process froze on login even though I'm quite sure I did the right thing and ps showed an active rawlog process Postfix is delivering the email straight into the mailboxes. Here is the information 4604ds1-ynoe:~ root# port installed | grep dovecot dovecot2 @2.0.18_0+mysql5+postgresql91 (active) dovecot2-sieve @0.2.5_1 (active) postfix @2.9.0_0+dovecot_sasl+mysql5+pcre+postgresql91 (active) 4604ds1-ynoe:~ root# 4604ds1-ynoe:log root# cat dovecot.log.txt Feb 19 11:46:52 4604ds1-ynoe dovecot[441]: master: Dovecot v2.0.18 starting up (core dumps disabled) Feb 19 11:51:47 4604ds1-ynoe dovecot[443]: auth: Debug: Loading modules from directory: /macports/lib/dovecot/auth Feb 19 11:51:47 4604ds1-ynoe dovecot[443]: auth: Debug: auth client connected (pid=495) Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth: Debug: client in: AUTH 1 PLAIN service=imap secured lip=127.0.0.1 rip=127.0.0.1 lport=143 rport=49180 resp=AGFidXNlQG1hdGhpZXNlbi5pbmZvAHRlc3R0ZXN0 Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth-worker: Debug: Loading modules from directory: /macports/lib/dovecot/auth Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth-worker: mysql(/macports/var/run/mysql5/mysqld.sock): Connected to database infomathiesenpostfixadmin Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth-worker: Debug: sql(abuse(a)mathiesen.info,127.0.0.1): query: SELECT username AS user, domain, password FROM mailbox WHERE username = 'abuse(a)mathiesen.info' AND domain = 'mathiesen.info' AND active = 1 Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth: Debug: client out: OK 1 user=abuse(a)mathiesen.info Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth: Debug: master in: REQUEST 738852865 495 1 687658e957c0e4f473891548eecc49be Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth-worker: Debug: sql(abuse(a)mathiesen.info,127.0.0.1): SELECT 5000 AS uid , 5000 AS gid , concat ( '/Volumes/BrugerData/PostFix/mail/' , maildir ) AS home , concat ( '/Volumes/BrugerData/PostFix/mail/' , maildir ) AS mail FROM mailbox WHERE username = 'abuse(a)mathiesen.info' AND domain = 'mathiesen.info' AND active = 1 Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: auth: Debug: master out: USER 738852865 abuse(a)mathiesen.info uid=5000 gid=5000 home=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/ mail=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/ Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap-login: Login: user=<abuse(a)mathiesen.info>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=503, secured Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap: Debug: Added userdb setting: mail=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/ Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap(abuse(a)mathiesen.info): Debug: Effective uid=5000, gid=5000, home=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/ Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap(abuse(a)mathiesen.info): Debug: mdbox autodetect: stat(/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/storage) failed: No such file or directory Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap(abuse(a)mathiesen.info): Debug: sdbox autodetect: stat(/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info/mailboxes) failed: No such file or directory Feb 19 11:52:20 4604ds1-ynoe dovecot[443]: imap(abuse(a)mathiesen.info): Debug: maildir++: root=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info, index=, control=, inbox=/Volumes/BrugerData/PostFix/mail/mathiesen.info/abuse(a)mathiesen.info, alt= Feb 19 11:53:01 4604ds1-ynoe dovecot[443]: imap(abuse(a)mathiesen.info): Disconnected: Logged out bytes=45/750 Feb 19 11:53:06 4604ds1-ynoe dovecot[443]: auth: Debug: auth client connected (pid=512) Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth: Debug: client in: AUTH 1 PLAIN service=imap secured lip=127.0.0.1 rip=127.0.0.1 lport=143 rport=49182 resp=AG1hY2ludG9zaEBtYXRoaWVzZW4uaW5mbwB0ZXN0dGVzdA== Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth-worker: Debug: sql(macintosh(a)mathiesen.info,127.0.0.1): query: SELECT username AS user, domain, password FROM mailbox WHERE username = 'macintosh(a)mathiesen.info' AND domain = 'mathiesen.info' AND active = 1 Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth: Debug: client out: OK 1 user=macintosh(a)mathiesen.info Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth: Debug: master in: REQUEST 1866334209 512 1 332714ca2a070d7adb342d4baba4a19a Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth-worker: Debug: sql(macintosh(a)mathiesen.info,127.0.0.1): SELECT 5000 AS uid , 5000 AS gid , concat ( '/Volumes/BrugerData/PostFix/mail/' , maildir ) AS home , concat ( '/Volumes/BrugerData/PostFix/mail/' , maildir ) AS mail FROM mailbox WHERE username = 'macintosh(a)mathiesen.info' AND domain = 'mathiesen.info' AND active = 1 Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: auth: Debug: master out: USER 1866334209 macintosh(a)mathiesen.info uid=5000 gid=5000 home=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/ mail=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/ Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap-login: Login: user=<macintosh(a)mathiesen.info>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=522, secured Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap: Debug: Added userdb setting: mail=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/ Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap(macintosh(a)mathiesen.info): Debug: Effective uid=5000, gid=5000, home=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/ Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap(macintosh(a)mathiesen.info): Debug: mdbox autodetect: stat(/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/storage) failed: No such file or directory Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap(macintosh(a)mathiesen.info): Debug: sdbox autodetect: stat(/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info/mailboxes) failed: No such file or directory Feb 19 11:53:55 4604ds1-ynoe dovecot[443]: imap(macintosh(a)mathiesen.info): Debug: maildir++: root=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info, index=, control=, inbox=/Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info, alt= Feb 19 11:54:13 4604ds1-ynoe dovecot[443]: imap(macintosh(a)mathiesen.info): Debug: Namespace : Using permissions from /Volumes/BrugerData/PostFix/mail/mathiesen.info/macintosh(a)mathiesen.info: mode=0700 gid=-1 Feb 19 12:12:16 4604ds1-ynoe dovecot[441]: master: Error: service(imap): child 522 killed with signal 3 Feb 19 12:15:48 4604ds1-ynoe dovecot[441]: master: Warning: Killed with signal 15 (by pid=1086 uid=0 code=unknown 0) 4604ds1-ynoe:log root# 4604ds1-ynoe:mail root# ps -axj | grep dovecot root 441 1 441 56804e0 0 Ss ?? 0:00.01 /macports/sbin/dovecot -c /macports/etc/dovecot/dovecot.conf _dovecot 442 441 441 56804e0 0 S ?? 0:00.01 dovecot/anvil root 443 441 441 56804e0 0 S ?? 0:00.01 dovecot/log 5000 522 441 441 56804e0 0 S ?? 0:00.01 dovecot/imap root 452 362 452 5680af8 1 S+ s001 0:00.00 tail -f dovecot.log root 543 380 542 4d84c30 2 R+ s002 0:00.00 grep dovecot 4604ds1-ynoe:mail root# kill -QUIT 522 4604ds1-ynoe:mail root# dovecot stop 4604ds1-ynoe:mail root# ps -axj | grep dovecot root 452 362 452 5680af8 1 S+ s001 0:00.00 tail -f dovecot.log root 1091 380 1090 4d84c30 2 R+ s002 0:00.00 grep dovecot 4604ds1-ynoe:mail root# 4604ds1-ynoe:~ root# telnet localhost 143 Trying 127.0.0.1... Connected to localhost (127.0.0.1). Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. a login "abuse(a)mathiesen.info" "x" a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in a list "" * * LIST (\HasNoChildren) "." "INBOX" a OK List completed. a select inbox * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1326334461] UIDs valid * OK [UIDNEXT 4] Predicted next UID * OK [HIGHESTMODSEQ 1] Highest a OK [READ-WRITE] Select completed. a logout * BYE Logging out a OK Logout completed. Connection closed by foreign host. 4604ds1-ynoe:~ root# telnet localhost 143 Trying 127.0.0.1... Connected to localhost (127.0.0.1). Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. a login "macintosh(a)mathiesen.info" "x" a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in a list "" * * LIST (\HasNoChildren) "." "INBOX" a OK List completed. a select inbox Connection closed by foreign host. 4604ds1-ynoe:~ root# 4604ds1-ynoe:~ root# dovecot -n # 2.0.18: /macports/etc/dovecot/dovecot.conf # OS: Darwin 10.8.0 i386 hfs auth_debug = yes auth_debug_passwords = yes auth_verbose = yes auth_verbose_passwords = plain base_dir = /macports/var/run/dovecot/ default_internal_user = _dovecot default_login_user = _dovenull disable_plaintext_auth = no first_valid_gid = 5000 first_valid_uid = 5000 mail_debug = yes mail_gid = 5000 mail_location = maildir:/Volumes/BrugerData/PostFix/mail/%d/%u mail_uid = 5000 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mmap_disable = yes passdb { args = /macports/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size } protocols = imap pop3 service postlogin { executable = script-login -d rawlog } ssl = no syslog_facility = local2 userdb { args = /macports/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol pop3 { pop3_client_workarounds = oe-ns-eoh outlook-no-nuls } 4604ds1-ynoe:~ root#

2 1

[Dovecot] Something is strange - perhaps my AMD processors ?
by Finn B 21 Feb '12

21 Feb '12

Moi Timo / all. I've been using Dovecot on my Qmailtoaster production mailserver for some years - since 1.0.7 and current Version 2.0.10 - works perfectly. Now I am installing a backupsystem and a VM testsystem (2 boxes) - and no matter how and what Version I am installing on these 2 boxes I get below messages whenever I try to test connection with Telnet (localhost 110 / 995). I have tried to install all Dovecot versions from 2.010 to 2.018 as rpms, yums and as source and compiled it. It's on Centos5.7 (64) with Qmailtoaster (which I have installed as I have done many times before) I have tried to copy all my settings from my current production system (Centos 5.7, latest and greatest versions of qmailtoaster and Dovecot 2.0.10) - nothing helps. Now I come to think of it I realize that my production system is intel based and the 2 new ones are AMD based and wonder if this may be the case ? Dovecot.log master: Error: Service(auth): command startup failed, throttling log: Error: Service(auth): child 1859 returned error 89 (Fatal failure) pop3-login: Error: Timeout waiting for handshake from auth server. my pid=1858, input bytes=0 Regards, Finn B

7 8

[Dovecot] Questions still about a uw-imap -> dovecot conversion
by Steve Campbell 20 Feb '12

20 Feb '12

The more I read about all of this, the more I'm thinking about moving to maildir format. My switchover this weekend is full of holes due to the way user's imap folders were laid out. Some had folders in their home directory and others might have folders in their /home/mail directory. Some how, Horde/Imp seemed to keep track of it. Dovecot is not doing so well. I've been reading about the conversion technique to convert to maildir, but I'm wondering if I can do this based on the way our users are set up. Most are pop accounts. Our webmail is configured to read the inbox from /var/spool/mail and their imap folders from /home or /home/mail. Some have imap accounts on their desktop defined through their mail client. RH/Centos seems to want me to switch to postfix since most of the documentation I find doesn't mention Sendmail. My filesystem is laid out to handle Inboxes in /var/spool/mail and imap folders in /home(/mail) and these aren't logical volumes but true partitions, so I've got to consider this as I make any changes. I also run pop using dovecot, so I'll need to figure all this out. I've read the technique linked to on the dovecot site that points to "Replacing UW-IMAP with Dovecot on RHEL 3" written back in 2004, and that's about the only real pointers I'm finding. I don't want to have to go around to each machine and change their clients to IMAP.. Anyone care to comment on anything similar they've done and how many pitfalls they ran into and what they were? steve campbell

3 4

[Dovecot] A Postfix/Dovecot example with SQLite backend [crossposted]
by /dev/rob0 19 Feb '12

19 Feb '12

There are many mail howtos on the web ... can one more hurt? http://rob0.nodns4.us/howto/README http://rob0.nodns4.us/howto/ http://rob0.nodns4.us/howto/latest.tar.gz (all files) (Sorry, not HTML yet. That is on the agenda.) This is a multiple address class sample implementation of a Postfix MTA and Dovecot IMAP server using a SQLite3 data backend. Domain lookups, user maps, access and transport maps: all using a single, shared SQLite database file. What, other than the SQLite backend, distinguishes this from other mail system howtos? The Postfix high points include a complete implementation of all address classes and per-address transport(5) maps, virtual(8) UID/GID maps, and smtpd(8) recipient access(5) maps. (The latter is using smtpd_restriction_classes, which are not discussed in detail, but are implemented in an interesting way.) On the Dovecot side, it's mostly standard stuff. The SQL deny userdb implementation, and the seamless integration of system and SQL users, might be interesting. I think the database itself is the best part of this example. It's as close to "normalized" as I think it can reasonably be. A significant fact is that each revision of the system has tended to simplify the schema. That's a good sign, I think. One central Domain table lists all domains and hostnames to which the server makes reference. Likewise, a central Address table lists all addresses (with a pointer to the Domain table for each record.) The Alias table defines relationships between Address entries. (Both local(8) and virtual(5) alias maps exist in that table.) Comments and suggestions are welcome, on-list if it's topical to whichever list (please don't crosspost unless comments are relevant to both lists), or offlist to the address in the README file (or as detailed below.) Thanks for your interest. -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:

1 0

[Dovecot] Automatic Debian packages for Dovecot v2.2.
by Stephan Bosch 19 Feb '12

19 Feb '12

Hi, For our testing enthusiasts I've created new automatic Debian repositories for Dovecot v2.2. Repositories are available for Debian oldstable, stable and testing, on both i386 and am64. Read the following wiki item for more information: http://wiki2.dovecot.org/PrebuiltBinaries#Automatically_Built_Packages The repository for Dovecot v1.2 has been defunct for a few months now and is expected to be removed soon. For the coming month or so, the builders at Xi will not be active during Dutch daytime. There are some issues with the virtual host's I/O performance that need to be resolved first. Regards, Stephan.

2 1

[Dovecot] I'm confused about my namespace parms
by Steve Campbell 19 Feb '12

19 Feb '12

Hi, I'm new to the list and to dovecot. I'm having a strange situation that provides no errors, so I'm having a little problem diagnosing what's going on. I've been running a Centos 3 mail server with sendmail for our company for quite a few years. I finally got approval for new servers this year and put Centos 6.2 on it. I'm sticking with sendmail, but that's not important. Up to this point, I've got all working fairly well. I've found that if I configure dovecot to use the mixed format (pop and imap INBOX in /var/spool/mail, Imap folders in /home/user/mail, two namespaces) as in the examples for "namespace", most works fine. Anyone who has used imap previously on our old system and work as if nothing has changed. Anyone who has never used Imap before can't seem to access the server using our webmail app (Horde/Imp). Dovecot is providing both pop and imap. An account that is set up from a normal mail client as imap has no problems as well. Sendmail is set up to create a new user in the /var/spool/mail folder. When I moved from the old server to the new server, I copied /home and /var/spool/mail to the new server - in other words, I kept the same scheme. There are no errors in the maillog, and it indicates that the user is getting logged in and out, but the return to Horde is that the user entered the wrong name or password. I'm thinking that this is probably due to how dovecot is trying to look for the imap folders, but the lack or any errors makes it a little difficult to diagnose. I'm fairly certain that what was installed on the old server was UW-Imap and was provided by the imap-2002 rpm. I tried using the examples for UW-Imap compatability but that didn't work at all. I haven't been able to figure out what's different about the old imap folder contents and what's missing in the newly created imap folders to allow Horde to access this account. I'll look at the Horde config to see if anything is there, but I'm cautious about changing anything that might break the current users' ability. Most of the accounts are set up as POP with the ability to see what's left on the server using Horde, webmail, and IMAP. Any help in tracing this down would really help. I think my biggest problem is I don't understand the "namespace" parameter as well as I should. So there it is. It seems I've got at least 3 areas to concentrate on. Steve Campbell ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/

2 2

[Dovecot] Move templates args to override_fields setting?
by Ralf Hildebrandt 18 Feb '12

18 Feb '12

After upgrading from 2.0.x to 2.1.x I get a lot of: Feb 18 18:18:12 postamt dovecot: auth-worker(31443): Warning: userdb passwd: Move templates args to override_fields setting OK, it's just a warning, but how do I fix that in a 2.0.x compatible way? The only place userdb is used is in this contaxt: # for user*masteruser logins passdb { args = /usr/local/etc/dovecot/dovecot.masteruser driver = passwd-file master = yes } # User via passwd userdb { driver = passwd args = cache_key=%u } -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt(a)charite.de | http://www.charite.de

2 2

[Dovecot] expunging
by Micah Anderson 18 Feb '12

18 Feb '12

I am having trouble scaling some regular dovecot cleanup operations on our servers. On a daily basis, I'm wanting to do this on each server, which contains its own isolated set of user storage: /usr/bin/doveadm expunge -A mailbox Trash* savedbefore 21d /usr/bin/doveadm expunge -A mailbox Spam savedbefore 7d /usr/bin/doveadm expunge -A mailbox Sent savedbefore 120d but these are a very expensive operations. For example, just doing the Spam expunge takes 30 minutes (or more, depending on the load) of heavy disk operations, on each machine it is run on. There are approximately 20k users on each machine. It seems like it does not use the iterate query, but rather it looks into the database at the expires table and rather it iterates over every user mentioned there. This is a problem because I've got multiple dovecot machines with different sets of users on them, using the same table, so that means that its doing stat() calls on each system for every user mentioned there and failing to find the user on the filesystem (because the user is on another system). In these cases it spits out an error: doveadm(user): Info: User no longer exists, skipping For users that do exist on this system, it seems to do something on the order of 15 stat() calls, at minimum. What are some things I can do to make this less of an expensive process? If I had a shared storage system that each machine used, this would cut down on the resource waste because I'd only need to run the query once, but unfortuntely, that isn't how these systems were designed. thanks for any ideas, tips etc. micah

3 3

[Dovecot] Quota warnings and LMTP
by joshua＠hybrid.pl 18 Feb '12

18 Feb '12

Hello, I have dovecot 2.0 configured with virtual users in MySQL, SMTP is handled by exim which uses dovecot LMTP transport. I'd like to test quota warning messages, but in wiki2 there is only an example for delivering it with dovecot-lda. I tried several ways of using lmtp binary, but without success. How to replace this: cat << EOF | /usr/local/libexec/dovecot/dovecot-lda -d $USER -o "plugin/quota=maildir:User quota:noenforcing" From: postmaster(a)domain.com Subject: quota warning Your mailbox is now $PERCENT% full. EOF with lmtp? Greetings, -- Jacek Osiecki

3 2

[Dovecot] Order of operations in Dovecot
by Eric Gregory 18 Feb '12

18 Feb '12

Hi, I'm working on an IMAP client and had a question about the order in which commands are responded to in Dovecot. In other IMAP servers I've looked at, when you issue two commands simultaneously (i.e. pipelining) it looks something like this: a fetch something b fetch something else * 1 FETCH (result) a OK FETCH completed * 1 FETCH (result) b OK FETCH completed This works well because it's clear which results are associated with which tag; the 'a' fetch results immediately precede the a's OK response, and likewise the 'b' fetch results immediately precede the b's OK response. But in Dovecot (version 2.0.13) the results of the two simultaneous commands are ordered like this: a fetch something b fetch something else * 1 FETCH (result) * 1 FETCH (result) a OK FETCH completed b OK FETCH completed This makes associating the results of the fetch commands quite a bit more difficult, since it's not entirely clear which results are paired with which tag. My question is this: is this Dovecot's intended behavior, or did I find a bug? I realize the IMAP spec is really vague about this. If this is the intended behavior, is there any advice for clients on how to determine which results are associated with which command? Thanks! - Eric

2 1