I decided to set up some of my mail servers to require certification authentication on the submission port (587). In my case, I want to forward mail from my server at home to my public servers out there on the Internet. I don’t want just anyone to be able to submit mail here, so the easiest way for me do to this was with certification. I could have done it with IP addresses, […]
Postfix client certificate verification Read More »
NOTE: this post title is inaccurate. It was not until later that I discovered the problem was related to 4908-bit certs, not 4096-bit certs. I appear to have found a bug with OSX and iOS. Neither one can handle a 4096-bit certificate by StartCom. Changing to a 2048-bit cert allowed the connection. I have not tested 4096-bit certs from other issuers. The scenario in question is an IMAP server running Dovecot. I tested
mail.app on Apple OSX and IOS fail when connecting to 4096-bit StartCOM certificates Read More »
There I was, just minding my own business, creating a new certificate request, when bang! I got hit with this: # openssl sl genrsa -des3 -out imaps.unixathome.org.key 2048 Generating RSA private key, 2048 bit long modulus ………………………………………………+++ ……………………………………………………………………………..+++ e is 65537 (0x10001) Enter pass phrase for imaps.unixathome.org.key: Verifying – Enter pass phrase for imaps.unixathome.org.key: # openssl req -new -key imaps.unixathome.org.key Unable to load config info from /etc/ssl/openssl.cnf What? Are you in a jail?
Unable to load config info from /etc/ssl/openssl.cnf Read More »
Last week, while at EuroBSDCon in Malta, I noticed that one of my servers had the wrong time. It was Bacula who told me, through this message in one of the backup jobs: 28-Sep 21:59 nyi-fd JobId 144899: DIR and FD clocks differ by -5 seconds, FD automatically compensating Fixing the time I connected to all my systems, and ran date(1). One system was by 2 seconds, and another was off by 5
different times despite running ntpd Read More »
I have a number of things I want to get done in the short term: remove the mail server on my gateway box at home and start using a mail server on an internal box Configure my external mail servers (out there on the Internet) to use TLS when talking to each other Configure those same servers to accept mail from that new internal mail server Stop using Postfix on servers which only