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  #1  
Old 23rd May 2012, 17:29
suaswe suaswe is offline
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Default IMAP not downloading mail (Postfix/Courier/mySQL setup)

Hi all!

I recently followed the 'Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.2 x86_64)' guide, and after a lot of graft I have now got the server to a point where I can send and receive mail internally and externally and load the Squirrelmail webpage; however, just as a cruel last little stumbling block, I have discovered here on the home straight that I am not receiving any mail into IMAP since yesterday afternoon, meaning that whilst I can send mail from Squirrelmail, I do not receive any there.

Now, I wish I could tell you what changes I made yesterday afternoon to allow it to briefly work for a few hours before stopping again, but alas, I have made so many changes before and since that I really have no clue. At the time when mail was coming in, yesterday 11am-1pm approx, Squirrelmail wasn't yet loading so I wasn't aware that it was downloading anything.

The failure to download anything into Squirrelmail comes from the fact that IMAP isn't receiving anything new (the six e-mails in the inbox below are the ones that came in yesterday):

Code:
telnet mydomain.com 143
Trying x.x.x.x...
Connected to mydomain.com.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2011 Double Precision, Inc.  See COPYING for distribution information.
0 login user1[a]mydomain.com passwd
0 OK LOGIN Ok.
0 select inbox
* FLAGS (\Draft \Answered \Flagged \Deleted \Seen \Recent)
* OK [PERMANENTFLAGS (\* \Draft \Answered \Flagged \Deleted \Seen)] Limited
* 6 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1337763508] Ok
* OK [MYRIGHTS "acdilrsw"] ACL
0 OK [READ-WRITE] Ok
The home dir as per authmysqlrc and main.cf is /home/vmail, as suggested by the how-to guide:

Code:
sudo cat /etc/authlib/authmysqlrc| grep HOME
MYSQL_HOME_FIELD "/home/vmail"

cat /etc/postfix/main.cf | grep vmail
virtual_mailbox_base = /home/vmail
Looking in the relevant subdirectory in /home/vmail, I can see the six e-mails also visible in IMAP/Squirrelmail, but no others:

Code:
ll /home/vmail/mydomain.com/user1/cur/*
-rw------- 1 vmail vmail 1295 May 22 11:39 /home/vmail/mydomain.com/user1/cur/1337683182.Vfd02I1920008M825692.mydomain.com:2,S
-rw------- 1 vmail vmail 1119 May 22 11:40 /home/vmail/mydomain.com/user1/cur/1337683234.Vfd02I192000bM642814.mydomain.com:2,S
-rw------- 1 vmail vmail 1119 May 22 11:49 /home/vmail/mydomain.com/user1/cur/1337683763.Vfd02I192000cM274064.mydomain.com:2,S
-rw------- 1 vmail vmail 1110 May 22 11:49 /home/vmail/mydomain.com/user1/cur/1337683769.Vfd02I192000dM508512.mydomain.com:2,S
-rw------- 1 vmail vmail 1132 May 22 13:24 /home/vmail/mydomain.com/user1/cur/1337689465.Vfd02I192000eM45146.mydomain.com:2,S
-rw------- 1 vmail vmail 1133 May 22 13:27 /home/vmail/mydomain.com/user1/cur/1337689623.Vfd02I192000fM33886.mydomain.com:2,S
I have sent ample test e-mails since this and they are appearing in /var/spool/mail/user1 rather than /home/vmail, which I take it is wrong? I would be very grateful if someone could help me with this!

Last edited by falko; 24th May 2012 at 13:40. Reason: Changed title as requested by user
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  #2  
Old 24th May 2012, 14:38
falko falko is offline
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Are there any errors in your mail log (in the /var/log/ directory)?

Did you compare your main.cf with the one from the tutorial?
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Old 24th May 2012, 16:01
suaswe suaswe is offline
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Hi Falko,

Thanks so much for replying!

I have pasted my postconf -n output below; have scoured it myself and compared it to what the guide suggests and from what I know, it looks correct - what are your thoughts?

The logs in maillog don't really reveal anything: when attempting to "download" mail to Squirrelmail I just get the following:

Code:
May 24 13:49:27 mydomain imapd: Connection, ip=[::ffff:x.x.x.x]
May 24 13:49:27 mydomain imapd: LOGIN, user=user1@mydomain.com, ip=[::ffff:x.x.x.x], port=[48761], protocol=IMAP
May 24 13:49:27 mydomain imapd: LOGOUT, user=user1@mydomain.com, ip=[::ffff:x.x.x.x], headers=0, body=0, rcvd=87, sent=391, time=0
.. and that's the only kind of entry I get for imapd, just logging in and logging out.

Postfix -n looks like this:

Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = amavis:[127.0.0.1]:10024
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = mydomain.com, localhost, localhost.localdomain
myhostname = mydomain.com
mynetworks = 127.0.0.0/8
newaliases_path = /usr/bin/newaliases.postfix
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
receive_override_options = no_address_mappings
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_tls_cert_file = /etc/postfix/mydomain.com.crt
smtpd_tls_key_file = /etc/postfix/mydomain.com.key
smtpd_use_tls = yes
transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
unknown_local_recipient_reject_code = 550
virtual_alias_domains = 
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /home/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_uid_maps = static:5000
Another weirdness is that I'm still also getting entries for sendmail when sending, and if I disable /usr/sbin/sendmail using chown or try to remove the sendmail package, I can no longer send mail using mailx. Is this a sendmail function within postfix (such as what postconf -n seems to be referring to above) or is something playing havoc? Typical mail trace when sending looks like:

Code:
May 24 13:52:51 mydomain sendmail[11975]: q4OCqpcd011975: from=user1, size=214, class=0, nrcpts=1, msgid=<201205241252.q4OCqpcd011975@mydomain.com>, relay=user1@localhost
May 24 13:52:51 mydomain postfix/smtpd[11976]: connect from localhost[127.0.0.1]
May 24 13:52:51 mydomain sendmail[11975]: STARTTLS=client, relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-SHA, bits=256/256
May 24 13:52:51 mydomain postfix/trivial-rewrite[11978]: warning: do not list domain mydomain.com in BOTH mydestination and virtual_mailbox_domains
May 24 13:52:51 mydomain postfix/smtpd[11976]: ABF081E0E64: client=localhost[127.0.0.1], sasl_sender=user1@mydomain.com
May 24 13:52:51 mydomain postfix/cleanup[11983]: ABF081E0E64: message-id=<201205241252.q4OCqpcd011975@mydomain.com>
May 24 13:52:51 mydomain postfix/qmgr[4104]: ABF081E0E64: from=<user1@mydomain.com>, size=630, nrcpt=1 (queue active)
May 24 13:52:51 mydomain sendmail[11975]: q4OCqpcd011975: to=user1@mydomain.com, ctladdr=user1 (500/5001), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30214, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as ABF081E0E64)
May 24 13:52:51 mydomain postfix/smtpd[11976]: warning: network_biopair_interop: error reading 5 bytes from the network: Connection reset by peer
May 24 13:52:51 mydomain postfix/smtpd[11976]: disconnect from localhost[127.0.0.1]
I'm not exactly sure what the verify=FAIL error is about, nor the warning regarding "do not list domain mydomain.com in BOTH mydestination and virtual_mailbox_domains"; if I remove mydomain.com from mydestination, I can no longer send mail.

I feel very tangled up here, would love some assistance if you're able!
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Old 25th May 2012, 09:02
falko falko is offline
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Quote:
May 24 13:52:51 mydomain postfix/trivial-rewrite[11978]: warning: do not list domain mydomain.com in BOTH mydestination and virtual_mailbox_domains
http://www.howtoforge.com/postfix-do...ailbox_domains
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Old 25th May 2012, 10:47
suaswe suaswe is offline
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Heh, I think maybe I've been an idiot: I tried removing my domain name from mydestination when I saw the error message initially, then tested whether it had worked by... using the mail function, which checks /var/spool/mail... Sigh! I think I get it now: when it's working correctly, mail will *not* end up there, kind of the whole point is that they'll go to /home/vmail instead - am-I-rite? Phiew, so it now seems to be working, getting mail into Squirrelmail and everything!

Now I just have one remianing query really: sendmail is still very much on my system, and in fact has reappeared as switched on in chkconfig a couple of times even after I've disabled it; similarly, postfix has gone off even though I've expressly switched it on. Also, I'm still seeing sendmail in my logs:

Code:
May 25 08:41:06 mydomain sendmail[1760]: q4P7f6Ql001760: from=user1, size=215, class=0, nrcpts=1, msgid=<201205250741.q4P7f6Ql001760@mydomain.com>, relay=user1@localhost
May 25 08:41:06 mydomain postfix/smtpd[1762]: connect from localhost[127.0.0.1]
May 25 08:41:06 mydomain sendmail[1760]: STARTTLS=client, relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-SHA, bits=256/256
May 25 08:41:06 mydomain postfix/smtpd[1762]: E97C01E0CF3: client=localhost[127.0.0.1], sasl_sender=user1@mydomain.com
May 25 08:41:06 mydomain postfix/cleanup[1766]: E97C01E0CF3: message-id=<201205250741.q4P7f6Ql001760@mydomain.com>
May 25 08:41:07 mydomain postfix/qmgr[1398]: E97C01E0CF3: from=<user1@mydomain.com>, size=641, nrcpt=1 (queue active)
May 25 08:41:07 mydomain sendmail[1760]: q4P7f6Ql001760: to=postmaster@mydomain.com, ctladdr=user1 (500/5001), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30215, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as E97C01E0CF3)
May 25 08:41:07 mydomain amavis[1479]: (01479-02) NOTICE: reconnecting in response to: err=2006, HY000, DBD::mysql::st execute failed: MySQL server has gone away at (eval 100) line 166, <GEN30> line 5.
May 25 08:41:07 mydomain postfix/smtpd[1762]: warning: network_biopair_interop: error reading 5 bytes from the network: Connection reset by peer
May 25 08:41:07 mydomain postfix/smtpd[1762]: disconnect from localhost[127.0.0.1]
May 25 08:41:08 mydomain postfix/smtpd[1773]: connect from unknown[127.0.0.1]
May 25 08:41:08 mydomain postfix/smtpd[1773]: 0736F1E0B1A: client=unknown[127.0.0.1]
May 25 08:41:08 mydomain postfix/cleanup[1766]: 0736F1E0B1A: message-id=<201205250741.q4P7f6Ql001760@mydomain.com>
May 25 08:41:08 mydomain postfix/smtpd[1773]: disconnect from unknown[127.0.0.1]
May 25 08:41:08 mydomain postfix/qmgr[1398]: 0736F1E0B1A: from=<user1@mydomain.com>, size=1068, nrcpt=1 (queue active)
May 25 08:41:08 mydomain amavis[1479]: (01479-02) Passed CLEAN, MYNETS LOCAL [127.0.0.1] [127.0.0.1] <user1@mydomain.com> -> <postmaster@mydomain.com>, Message-ID: <201205250741.q4P7f6Ql001760@mydomain.com>, mail_id: UhA2vFoZ4snR, Hits: -1, size: 641, queued_as: 0736F1E0B1A, 1047 ms
May 25 08:41:08 mydomain postfix/smtp[1767]: E97C01E0CF3: to=<postmaster@mydomain.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.2, delays=0.12/0.01/0.01/1.1, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 0736F1E0B1A)
May 25 08:41:08 mydomain postfix/qmgr[1398]: E97C01E0CF3: removed
May 25 08:41:08 mydomain postfix/virtual[1775]: 0736F1E0B1A: to=<user1@mydomain.com>, orig_to=<postmaster@mydomain.com>, relay=virtual, delay=0.17, delays=0.07/0.02/0/0.09, dsn=2.0.0, status=sent (delivered to maildir)
May 25 08:41:08 mydomain postfix/qmgr[1398]: 0736F1E0B1A: removed
May 25 08:41:48 mydomain postfix/smtpd[1746]: timeout after END-OF-MESSAGE from unknown[127.0.0.1]
May 25 08:41:48 mydomain postfix/smtpd[1746]: disconnect from unknown[127.0.0.1]
Is this normal?
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  #6  
Old 29th May 2012, 13:04
falko falko is offline
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I'd try to uninstall Sendmail.
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Old 29th May 2012, 13:09
suaswe suaswe is offline
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Hi falko,

I have tried this however doing so causes sending mail to no longer work. Did 'yum remove sendmail' then tried to send in Squirrelmail:

******
Message not sent. Server replied:

Email delivery error
127 Can't execute command '/usr/sbin/sendmail -i -t -fuser1@mydomain.com'.
******

So sending is still relying on sendmail, from what I can tell. Any ideas?

Cheers!

suaswe
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Old 30th May 2012, 17:12
falko falko is offline
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Seems as if Postfix isn't fully installed (it comes with its own sendmail tool to be compatible with Sendmail). Please try to reinstall Postfix.
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Old 31st May 2012, 16:53
suaswe suaswe is offline
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Hi there falko,

I removed postfix (yum remove), installed it again (yum install) and removed sendmail (yum remove). Since doing this, I can no longer send mail via Squirrelmail; e-mails sent from there seem to disappear, and I'm not getting any logs to indicate send attemps. E-mails sent by mailx go to /var/spool/mail instead of /home/vmail.

No configuration changes have been made in /etc/postfix/* - do you know what might be causing this?
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Old 31st May 2012, 17:30
suaswe suaswe is offline
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OK, managed to sort this - when reinstalling Postfix I backed up all settings in /etc/postfix/*, then once installing I checked whether the settings were correctly retained. The mysql files and all that had been so didn't bother restoring from backup, but it seems main.cf may somehow not have been as the "inet_interfaces=all" line was commented out and it was instead just listening on local. Have now restored config from backup and everything is looking good, with no Sendmail involved! Cheers for your help.
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