Hi To All Gurus,
Im encountering some problems on my mailserver. When my clients are downloading
their emails, when they reach around 15 mails downloaded somehow the connection
stops. Im using Centos4.2, Postfix and Dovecot. Any one experiece these ?
tia
---------------------------------
---------------------------------
Blab-away for as little as 1?/min. Make PC-to-Phone Calls using Yahoo!
Messenger with Voice.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.centos.org/pipermail/centos/attachments/20060328/61515868/attachment.htm
On 3/28/06, spart cus <linux_spartacus@yahoo.com> wrote:> Hi To All Gurus, > Im encountering some problems on my mailserver. When my clients are > downloading their emails, when they reach around 15 mails downloaded somehow > the connection stops. Im using Centos4.2, Postfix and Dovecot. Any one > experiece these ?So, not to ask the obvious question here, but what do the logs say? -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety'''' Benjamin Franklin 1775
Jim Perrin <jperrin@gmail.com> wrote: On 3/28/06, spart cus wrote:> Hi To All Gurus, > Im encountering some problems on my mailserver. When my clients are > downloading their emails, when they reach around 15 mails downloaded somehow > the connection stops. Im using Centos4.2, Postfix and Dovecot. Any one > experiece these ?So, not to ask the obvious question here, but what do the logs say? org/mailman/listinfo/centos Logs for my dovecot and postfix seems to be ok. Sending is not a problem so it means my Postfix works well. My receiving services is the problem. Cant find any error logs on my mail server. --------------------------------- New Yahoo! Messenger with Voice. Call regular phones from your PC for low, low rates. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.centos.org/pipermail/centos/attachments/20060328/122ed420/attachment.htm
> So, not to ask the obvious question here, but what do the logs say? > org/mailman/listinfo/centos > Logs for my dovecot and postfix seems to be ok. Sending is not a problem so > it means my Postfix works well. My receiving services is the problem. Cant > find any error logs on my mail server.Iptables rules getting in the way? anything unusual in /var/log/messages? -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety'''' Benjamin Franklin 1775
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, Mar 28, 2006 at 10:01:06PM -0500, Jim Perrin wrote:> > So, not to ask the obvious question here, but what do the logs say? > > org/mailman/listinfo/centos > > Logs for my dovecot and postfix seems to be ok. Sending is not a problem so > > it means my Postfix works well. My receiving services is the problem. Cant > > find any error logs on my mail server. > > Iptables rules getting in the way? anything unusual in /var/log/messages?Or on dmesg ? - -- Rodrigo Barbosa <rodrigob@suespammers.org> "Quid quid Latine dictum sit, altum viditur" "Be excellent to each other ..." - Bill & Ted (Wyld Stallyns) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFEKfkIpdyWzQ5b5ckRApIZAKCe6WuSQ7s2D6Cal3Vxspsyf+qJLwCeK60/ 2h1dfixN/egjnTS4jgy08/M=q0h4 -----END PGP SIGNATURE-----
Rodrigo Barbosa <rodrigob@suespammers.org> wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, Mar 28, 2006 at 10:01:06PM -0500, Jim Perrin wrote:> > So, not to ask the obvious question here, but what do the logs say? > > org/mailman/listinfo/centos > > Logs for my dovecot and postfix seems to be ok. Sending is not a problem so > > it means my Postfix works well. My receiving services is the problem. Cant > > find any error logs on my mail server. > > Iptables rules getting in the way? anything unusual in /var/log/messages?Or on dmesg ? no unusual logs on maillog and dmesg also. Im thinking if its a connectivity problem on dovecot ? i tried one of my clients. downloading 40 mails, on the 20th mail it stops there and timeout. --------------------------------- Blab-away for as little as 1?/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.centos.org/pipermail/centos/attachments/20060328/c7e7d276/attachment.htm
> no unusual logs on maillog and dmesg also. Im thinking if its a connectivity > problem on dovecot ? i tried one of my clients. downloading 40 mails, on the > 20th mail it stops there and timeout.Oh, on the 20th email! Well that changes EVERYTHING! We need information to be able to help you. Use an email client like thunderbird and watch the email transaction, or use ethereal and sniff/follow the email transaction, or increase the logging on the server. Right now, you''ve not shown us how your server is configured. We have no logs to consult, only your word that they''re okay, and we have no client to watch to see how the client treats the server. in short... GIVE US INFORMATION! You need to help us help you. -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety'''' Benjamin Franklin 1775
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, Mar 28, 2006 at 07:07:33PM -0800, spart cus wrote:> no unusual logs on maillog and dmesg also. Im thinking if its a connectivity > problem on dovecot ? i tried one of my clients. downloading 40 mails, on the > 20th mail it stops there and timeout."strace -p" is your friend. - -- Rodrigo Barbosa <rodrigob@suespammers.org> "Quid quid Latine dictum sit, altum viditur" "Be excellent to each other ..." - Bill & Ted (Wyld Stallyns) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFEKgNopdyWzQ5b5ckRAqffAJ9hfCOG2sWn5qNuahYMmjs8/FzBKACdFs/T 5bUrMeckKt+T3XPJbGtYjlg=3S8N -----END PGP SIGNATURE-----
spart cus spake the following on 3/28/2006 6:38 PM:> Hi To All Gurus, > Im encountering some problems on my mailserver. When my clients are > downloading their emails, when they reach around 15 mails downloaded > somehow the connection stops. Im using Centos4.2, Postfix and Dovecot. > Any one experiece these ? >Try and increase the timeouts for the clients. Are you using Outlook on the clients? There are some workarounds for outlook in Dovecot. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don''t!!!!
Scott Silva <ssilva@sgvwater.com> wrote: spart cus spake the following on 3/28/2006 6:38 PM:> Hi To All Gurus, > Im encountering some problems on my mailserver. When my clients are > downloading their emails, when they reach around 15 mails downloaded > somehow the connection stops. Im using Centos4.2, Postfix and Dovecot. > Any one experiece these ? >Try and increase the timeouts for the clients. Are you using Outlook on the clients? There are some workarounds for outlook in Dovecot. Yes some of my clients uses outlook. When i check rpm -qa|grep dovecot, it says dovecot-0.99.11-2.EL4.1, so it means it uses .99 version.But when i check the dovecot.conf , at the beginning of the file ## Dovecot 1.0 configuration file with this on the file # outlook-pop3-no-nuls #client_workarounds client_workarounds = outlook-pop3-no-nuls should i use this one ? and what does this config actually do so that i could explain to them the erros. thanks. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.centos.org/pipermail/centos/attachments/20060329/80fd2afc/attachment.htm
spart cus spake the following on 3/29/2006 10:07 PM:> > > */Scott Silva <ssilva@sgvwater.com>/* wrote: > > spart cus spake the following on 3/28/2006 6:38 PM: > > Hi To All Gurus, > > Im encountering some problems on my mailserver. When my clients are > > downloading their emails, when they reach around 15 mails downloaded > > somehow the connection stops. Im using Centos4.2, Postfix and Dovecot. > > Any one experiece these ? > > > Try and increase the timeouts for the clients. > Are you using Outlook on the clients? > There are some workarounds for outlook in Dovecot. > > Yes some of my clients uses outlook. > > When i check rpm -qa|grep dovecot, it says dovecot-0.99.11-2.EL4.1, > so it means it uses .99 version.But when i check the dovecot.conf , at > the beginning of the file > > ## Dovecot 1.0 configuration file > > with this on the > file > > # outlook-pop3-no-nuls > #client_workarounds > client_workarounds = outlook-pop3-no-nuls > should i use this one ? and what does this config actually do so that i could > explain to them the erros. > thanks.# outlook-pop3-no-nuls: # Outlook and Outlook Express hang if mails contain NUL characters. # This setting replaces them with 0x80 character. It isn''t exactly .99 it is .99 with the famous RedHat backporting of fixes, so it is somewhere between .99 stable and whatever 1.0 beta that they ported from. If you look in the stock config file, it is very well commented. I haven''t enabled any workarounds, and haven''t had any complaints since the initial migration and duplicated messages, but you can experiment with outlook_idle and outlook-pop3-no-nuls. Make sure that the locking is the same as your MUA and delivery agent. In CentOS 4 it should be fcntl. In CentOS 3 I think it should be flock, but don''t hold me to it. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don''t!!!!