Re: [qmailtoaster] dovecot dropping connection.reaching process limit 100 just few second.

[Eric Broch]

https://wiki.dovecot.org/LoginProcess

On 4/13/2019 2:59 PM, Tahnan Al Anas wrote:

Dear Eric,

One of my server seems getting session block on imap. I am unable to 
log on webmail or even unable to telnet on 143 port. After restarting 
dovecot, I can log immediately but if I wait 30 sec to one min, again 
I am unable to log in. Below are the reports:


telnet:

[root@client html]# telnet localhost 143
Trying ::1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.
[root@client html]#

[root@client html]# systemctl restart dovecot
[root@client html]# telnet localhost 143
Trying ::1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE 
IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] 
Dovecot toaster ready.

a logout
* BYE Logging out
a OK Logout completed.
Connection closed by foreign host.
[root@client html]#

Log:

master: Warning: service(imap-login): process_limit (100) reached, 
client connections are being dropped



--
--

Best Regards
Muhammad Tahnan Al Anas

Re: [qmailtoaster] dovecot dropping connection.reaching process limit 100 just few second.

[remo]

Looks like ips max number 

> Il giorno 13 apr 2019, alle ore 13:59, Tahnan Al Anas  ha 
> scritto:
> 
> Dear Eric,
> 
> One of my server seems getting session block on imap. I am unable to log on 
> webmail or even unable to telnet on 143 port. After restarting dovecot, I can 
> log immediately but if I wait 30 sec to one min, again I am unable to log in. 
> Below are the reports:
> 
> telnet: 
> 
> [root@client html]# telnet localhost 143
> Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
> Connection closed by foreign host.
> [root@client html]#
> 
> [root@client html]# systemctl restart dovecot
> [root@client html]# telnet localhost 143
> Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
> * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE 
> STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot toaster 
> ready.
> a logout
> * BYE Logging out
> a OK Logout completed.
> Connection closed by foreign host.
> [root@client html]# 
> 
> Log: 
> 
> master: Warning: service(imap-login): process_limit (100) reached, client 
> connections are being dropped 
> 
> 
> --
> --
> 
> Best Regards
> Muhammad Tahnan Al Anas
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