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Postfix running fine, installed postgrey, now no email.
https://forum.linode.com/viewtopic.php?f=11&t=4936		 Page 1 of 1
Author:  delayedinsanity [ Sun Dec 06, 2009 9:22 pm ]
Post subject:  Postfix running fine, installed postgrey, now no email.
First off, an introduction - just heard about Linode after the recent VPS reviews came up in the forums over at another VPS that I host with, and immediately came over to sign up.

I started by transferring my mail server (postfix+courier) over here, which I had up and running with no problems right up until I just recently decided to give postgrey a try.

Installed postgrey, configured it according to the debuntu howto, and off I went sending some test mails. None of them ever came back, and I saw no entries in my mail log similar to the ones suggested that I should be seeing.

After giving it some time, and no emails I decided to roll back and start over. I removed postgrey, and tried reverting my /etc/ back with etckeeper (which oddly enough did nothing to my /etc/postfix/main.cf file even though I rolled back to before the apt install).

After manually editing my main.cf to remove the postgrey settings in "smtpd_recipient_restrictions", and reloaded postfix, I'm still not getting any emails whatsoever. Made signing up for these forums a hotmail affair. :( So something in installing and removal of postgrey, I'm assuming, is still resident on the system.

Postgrey is gone, it's been removed and purged, no configuration files anywhere. The only edits I made to postfix to get it running was to my main.cf file, and I have reloaded it since. Yet still no emails.

I'd rather not have to purge postfix and reinstall, but I guess I will if I have to?
Author:  mwaterous [ Sun Dec 06, 2009 10:47 pm ]
Post subject: 
Disregard the above, I think I figured out that the original (-postgrey) problem was between keyboard and chair.

Since I fixed that I reinstalled postgrey on 10023 as suggested in the man page, and added the check relay to main.cf on the same port. Once again I haven't gotten any email since - my iptables is open on the loopback, so now I'm at a loss again as to why what should be a dead simple install keeps completely dropping my email...
Author:  Vance [ Mon Dec 07, 2009 10:50 pm ]
Post subject: 
What do your mail logs say? You should be seeing entries like
Code:
Dec  6 07:33:53 lixx-yy postgrey[2745]: action=pass, reason=triplet found, delay=306, client_name=mail.example.org, client_address=11.99.252.1, sender=bar@example.org, recipient=baz@fleem.example.com

Dec  6 07:39:40 lixx-yy postgrey[2745]: action=greylist, reason=new, client_name=unknown, client_address=7.201.4.16, sender=foo@example.net, recipient=baz@fleem.example.com


And when you start postgrey, something like this:
Code:
Dec  7 21:45:13 lixx-yy postgrey[2307]: Process Backgrounded
Dec  7 21:45:13 lixx-yy postgrey[2307]: 2009/12/07-21:45:13 postgrey (type Net::Server::Multiplex) starting! pid(2307)
Dec  7 21:45:13 lixx-yy postgrey[2307]: Binding to UNIX socket file /var/spool/postfix/postgrey/socket using SOCK_STREAM
Dec  7 21:45:13 lixx-yy postgrey[2307]: Setting gid to "102 102"
Dec  7 21:45:13 lixx-yy postgrey[2307]: Setting uid to "101"


My config is set up to use a unix socket as described here instead of listening on a port - that avoids any firewall issues.
Author:  mwaterous [ Thu Dec 10, 2009 4:47 pm ]
Post subject: 
Thanks Vance, I may take it off the port and use the socket as described, though I don't seem to be having any more troubles.

I would have posted back sooner but we got taken out of town unexpectedly; anyways it seems that under the worst of coincidences, my ISPs mail server was experiencing extremely heavy load the day I installed postgrey and the mail just never got delivered back to me for nearly 4-6 hours. So it wasn't postgrey, it was them! Alls well that ends well. :)
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