Sudden Fetchmail Failures

[jovisuk]

Hi Guys,

Been running a B3 now for a few months and have it happily handling email for about 10 accounts via POP3 download. Then clients logging on via Thunderbird and collecting email by IMAP.

However, came in this morning and for some reason, the B3 is failing to pickup emails from my mail host.

I've checked their end a number of times and I can log onto their webmail interface and view mails waiting to download. However the B3 is not picking them up.

So, have been through the logs and all I can find is the following:

mail.err log output:

Code: Select all

Apr  6 12:19:02 main-bubba fetchmail[1122]: couldn't find canonical DNS name of mail.ls-electrical.com (mail.ls-electrical.com): Name or service not known
Apr  6 12:19:02 main-bubba fetchmail[1122]: getaddrinfo("MAILSERVERADDRESS","pop3") error: Name or service not known
Apr  6 12:19:02 main-bubba fetchmail[1122]: POP3 connection to MAILSERVERADDRESS failed: Connection refused
Apr  6 12:24:24 main-bubba fetchmail[1122]: connection to MAILSERVERADDRESS:pop3 [IPADDRESS/110] failed: Connection timed out.
Apr  6 12:24:24 main-bubba fetchmail[1122]: POP3 connection to MAILSERVERADDRESS failed: Connection timed out
Apr  6 12:24:45 main-bubba fetchmail[1122]: connection to MAILSERVERADDRESS:pop3 [IPADDRESS/110] failed: Connection timed out.
Apr  6 12:24:45 main-bubba fetchmail[1122]: POP3 connection to MAILSERVERADDRESS failed: Connection timed out
Apr  6 12:25:06 main-bubba fetchmail[1122]: connection to MAILSERVERADDRESS:pop3 [IPADDRESS/110] failed: Connection timed out.

Now from here I can ping my server IP address and mail server address and it both resolves. I have also checked the fetchmail settings in fetchmailrc and they are all correct.

I have also, deleted an account and re-added it in but no joy.

As well as this, I have done a good old fashioned reboot of the server after I did a backup.

Does anyone have any idea's - or if you need any more information just let me know.

As ever, grateful for any help you guys can shed on this.

Many thanks,

[jovisuk]

Ok, so have dug through the Mail Log some more and found where is starting going wrong:

Code: Select all

Apr 6 08:53:39 main-bubba fetchmail[1100]: Server certificate verification error: self signed certificate
Apr 6 08:53:39 main-bubba fetchmail[1100]: This means that the root signing certificate (issued for /C=US/ST=Unknown/L=Unknown/O=Unknown/OU=Unknown/CN=MAILSERVER/emailAddress=ssl@MAILSERVER) is not in the trusted CA certificate locations, or that c_rehash needs to be run on the certificate directory. For details, please see the documentation of --sslcertpath and --sslcertfile in the manual page.
Apr 6 08:53:39 main-bubba fetchmail[1100]: Warning: the connection is insecure, continuing anyways. (Better use --sslcertck!)
Apr 6 08:54:09 main-bubba fetchmail[1100]: Authorization failure on USERNAME@MAILSERVER (previously authorized)
Apr 6 08:54:09 main-bubba fetchmail[1100]: Query status=3 (AUTHFAIL)

[Cheeseboy]

Hi,

My guess is that you can ignore all the messages from 08:53:39.
I get those all the time, and it is because my ISP has a sloppy setup.

The last two though...(08:54:09) Have you tried logging in with your ISP manually with the same credentials you use for fetchmail recently?
Perhaps they have changed your password or something?

Best regards,

Cheeseboy

[RandomUsername]

How often is it checking? Maybe you've been blocked for checking too often and it looks like a DDOS attempt or something.

[jovisuk]

Hi Thanks for the replies.

I've tested the login's manually and they work fine, and I've also checked with the ISP and I've not been blocked (That was my first thought)

It's set to check every 3 mins.

I've just changed the usernames on some of the accounts to be:

[email protected]

Instead of

name+domain.co.uk

I'll see if that makes any difference, can't see that it will but I'm willing to try anything at the moment!!

[jovisuk]

Ok so after my 5TH call to my mail host they finally admit that they had blocked my IP Address - not sure why they hadn't realised before then but that has just cost me 1 full day's email activity due to their incompetence!!

Thanks for the suggestions guys.

SOLVED