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Re: [Dovecot] change smtp port
by Giles Coochey 23 Jan '12

23 Jan '12

On 2012-01-23 14:38, Amira Othman wrote: > And there is no way to receive incoming emails not on port 25 ? > > No. http://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

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Re: [Dovecot] change smtp port
by Ralf Hildebrandt 23 Jan '12

23 Jan '12

* Amira Othman <a.othman(a)cairosource.com>: > Hi all > > I am using postfix 2.8 with dovecot-1.2.17-0_116.el5 on cento 5.7 server . > when I changed smtp port from 25 to 587 from postfix configuration my mail > server stops to receive emails. That's normal. > I think it sounds strange and I don't understand why this happen any > one can help me Mail from other systems comes in via port 25. Once you change the port, nobody can send mail to your server. Easy, no? -- 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

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Re: [Dovecot] change smtp port
by Giles Coochey 23 Jan '12

23 Jan '12

On 2012-01-23 14:30, Amira Othman wrote: > Hi all > > I am using postfix 2.8 with dovecot-1.2.17-0_116.el5 on cento 5.7 > server . > when I changed smtp port from 25 to 587 from postfix configuration my > mail > server stops to receive emails. I think it sounds strange and I don't > understand why this happen any one can help me > > > > Regards If this SMTP server is your MX record, then you need to use port 25. Only use the 587 port for authenticated submissions from your own users for outgoing email. -- Message sent via my webmail account.

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[Dovecot] change smtp port
by Amira Othman 23 Jan '12

23 Jan '12

Hi all I am using postfix 2.8 with dovecot-1.2.17-0_116.el5 on cento 5.7 server . when I changed smtp port from 25 to 587 from postfix configuration my mail server stops to receive emails. I think it sounds strange and I don't understand why this happen any one can help me Regards

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[Dovecot] Sieve tempoary script folder
by Markus Fritz 21 Jan '12

21 Jan '12

Hello, I got the issue that sieve wants to write his tmp files to /etc/dovecot/. But I want sieve to write in a folder which it has write rights. I created a script to to put spam in the 'Spam' folder, put it in /etc/dovecot/.dovecot.sieve. When recieving a mail sieve want's to create a tmp file like /etc/dovecot/.dovecot.sieve.12033 How to change the desired tmp folder by sieve?

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[Dovecot] 2.1.rc3 (1a722c7676bb): doveadm mailbox list withholds child mailboxes
by Pascal Volk 21 Jan '12

21 Jan '12

Probably I've overlooked something. But a quick search in `hg log -k doveadm` didn't show appropriate information. doveadm mailbox list -u user(a)example.com doesn't show child mailboxes. mailbox = N/A || \*: Sent Trash INBOX Drafts Junk-E-Mail Supplier mailbox = Supplier*: Supplier mailbox = Supplier/*: Supplier/Dell Supplier/VMware Supplier/… The same problem exists in `doveadm mailbox status` Regards, Pascal -- The trapper recommends today: defaced.1201301(a)localdomain.org

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Re: [Dovecot] mail_max_userip_connections exceeded.
by Joseph Tam 21 Jan '12

21 Jan '12

Simon Brereton <simon.brereton(a)buongiorno.com> writes: > /var/log/mail.log.1:2490:Jan 19 12:02:55 mail dovecot: imap-login: > Maximum number of connections from user+IP exceeded > (mail_max_userip_connections): user=<user(a)example.com>, method=PLAIN, > rip=127.0.0.1, secured > > I never changed this from the default 10. When I googled this error > there was a thread on this list from May 2011 that indicated one would > need one connection per user per subscribed folder. However, I know > that user doesn't have 10 folders, let alone 10 subscribed folders! I > can increase, it but it's not going to scale well. And there are > people on this list with many 1000x users than I have - so how do they > deal with that? > > 127.0.0.1 is obviously webmail (IMP5). IMAP proxy or lack of proxy? IMAP proxy could be a problem if the user had opened more than 10 (unique) mailboxes. The proxy would keep this connection open until a timeout, and after some time, could accumulate more connections than your limit. The lack of proxy could solve your problem if for some reason your webmail software is not closing the IMAP connection properly (I assume IMP does a connect/authenticate/IMAP command/logout for every webmail operation). Every connection (even to the same mailbox) would open up a new connection. The proxy software will recognize the reconnnection and funnel it through its cached connection. You can lsof the user's IMAP processes (or troll through /proc/{imap-process} or what you have) to figure out which mailboxes it has opened. On my system, file descriptor 9 and 11 gives you the names of the index files that indicate which mailboxes are being accessed. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Clients show .subscriptions folder
by Mark Sapiro 21 Jan '12

21 Jan '12

Since upgrading from dovecot-2.1.rc1 to dovecot-2.1.rc3, some clients are showing a .subscriptions file in the user's mbox path as a folder. Some clients such as T'bird on Mac OS X create this file listing subscribed mbox files. Other clients such as T'bird on Windows XP show this file as a folder in the folder list even though it cannot be accessed as a folder (dovecot returns CANNOT Mailbox is not a valid mbox file). I think this may be a result of uncommenting the inbox namespace in conf.d/10-mail.conf <http://hg.dovecot.org/dovecot-2.1/rev/2c8d39467f21>. Is there a way to supress exposing this file to clients that don't use it? # dovecot -n # 2.1.rc3: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.18-8.1.14.el5 i686 CentOS release 5 (Final) auth_mechanisms = plain apop login auth_worker_max_count = 5 mail_location = mbox:~/Mail:INBOX=/var/spool/mail/%u mail_privileged_group = mail mbox_write_locks = fcntl dotlock namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /usr/local/etc/dovecot.passwd driver = passwd-file } passdb { driver = pam } protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } } ssl_cert = </etc/httpd/conf/ssl/combined.crt ssl_key = </etc/httpd/conf/ssl/www.grizz.org.key userdb { driver = passwd } protocol imap { mail_max_userip_connections = 30 } # -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

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[Dovecot] Performance of Maildir vs sdbox/mdbox
by Lee Standen 20 Jan '12

20 Jan '12

Hi Guys, I've been desperately trying to find some comparative performance information about the different mailbox formats supported by Dovecot in order to make an assessment on which format is right for our environment. This is a brand new build, with customer mailboxes to be migrated in over the course of 3-4 months. Some details on our new environment: * Approximately 1.6M+ mailboxes once all legacy systems are combined * NetApp FAS6280 storage w/ 120TB usable for mail storage, 1TB of FlashCache in each controller * All mail storage presented via NFS over 10Gbps Ethernet (Jumbo Frames) * Postfix will feed new email to Dovecot via LMTP * Dovecot servers have been split based on their role - Dovecot LDA Servers (running LMTP protocol) - Dovecot POP/IMAP servers (running POP/IMAP protocols) - LDA & POP/IMAP servers are segmented into geographically split groups (so no server sees every single mailbox) - Nginx proxy used to terminate customer connections, connections are redirected to the appropriate geographic servers * Apache Lucene indexes will be used to accelerate IMAP search for users Our closest current live configuration (Qmail SMTP, Courier IMAP, Maildir) has 600K mailboxes and pushes ~ 35,000 NFS operations per second at peak Some of the things I would like to know: * Are we likely to see a reduction in IOPS/User by using Maildir alone under Dovecot? * What kind of IOPS/User reduction could we expect to see under mdbox? * If someone can give some technical reasoning behind why mdbox does less IOPS than Maildir? I understand some of the reasons for the mdbox IOPS question, but I need some more information so we can discuss internally and make a decision as to whether we're comfortable going with mdbox from day one. We're very familiar with Maidlir, and there's just some uneasiness internally around going to a new mail storage format. Thanks!

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[Dovecot] mail_max_userip_connections exceeded.
by Simon Brereton 20 Jan '12

20 Jan '12

Hi I'm using Dovecot version 1:1.2.15-7 installed on Debian Squeeze via apt-get.. I have this error in the logs. /var/log/mail.log.1:2490:Jan 19 12:02:55 mail dovecot: imap-login: Maximum number of connections from user+IP exceeded (mail_max_userip_connections): user=<user(a)example.com>, method=PLAIN, rip=127.0.0.1, secured I never changed this from the default 10. When I googled this error there was a thread on this list from May 2011 that indicated one would need one connection per user per subscribed folder. However, I know that user doesn't have 10 folders, let alone 10 subscribed folders! I can increase, it but it's not going to scale well. And there are people on this list with many 1000x users than I have - so how do they deal with that? 127.0.0.1 is obviously webmail (IMP5). So, how/why am I seeing this, and should I be concerned? Simon

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