Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : Emails not delivered.

[EricG]

Hello,

I had a strange issue on my VPS this morning. For over an hour the cpu load was very high and the VPS very slow. I couldn't find what was going on but I think a user ran a script to send about 150 emails.

Since this morning, exim can't deliver emails. I'm not sure if it's to all domains or only the 4 that are stuck there now. I tried exim -bh on those domains and I got the following

>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? no (option unset)
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? yes (matched "*")
220-vps.netsimplicite.com ESMTP Exim 4.63 #1 Sat, 24 Feb 2007 19:42:44 -0500
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.


Was I blocked by these servers or is something wrong on my side ?

[TLott]

Can't tell much from that. Does your exim_mainlog yield any further info when you try to manually send the messages?

[EricG]

Not really. I was getting lots of emails from the server this morning because the cpu problem made some services go down and the server send notifications of that.


At 9:25 it was working.

2007-02-24 09:25:35 1HKxq3-00074i-OO => me@myisp
R=lookuphost T=remote_smtp H=mx.videotron.ca [24.201.245.37]
2007-02-24 09:25:35 1HKxq3-00074i-OO Completed

One minute later it was not anymore
2007-02-24 09:26:28 1HKxqr-0007ke-4s == me@myisp
R=lookuphost T=remote_smtp defer (111): Connection refused


Does this have anything to do with "defer (111)" or am I getting this because the conneciton is refused ?

[EricG]

Problem fixed.

My firewall (apf) started blocking them for some reason. A simple stop/start fixed the problem.

[NogomHost]

Originally Posted by EricG

Problem fixed.

My firewall (apf) started blocking them for some reason. A simple stop/start fixed the problem.

Thats right ,

run this command by ssh " apf -r "