Shami's Blog

Sysadmin, Because Even Developers Need Heroes

Adding 'on behalf of' To Outgoing Emails With Postfix

2016-04-28 by Mohammad H. Al-Shami

I used to be a big fan of Mandrill. I used to use it as an email gateway for my personal servers. It’s easy to use and it’s cheap (Or free if you send less than 12,000 emails per month). I liked not having to setup SPF, DKIM, and DMARC for my small setups. Even for smaller clients I wouldn’t bother with that and just use Mandrill. Emails just show up with the following sender [email protected]; on behalf of; [email protected]

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Randomize Source IP Addresses With Postfix

2016-04-27 by Mohammad H. Al-Shami

Sometimes when you have a high number of outgoing messages services like Yahoo! and Gmail might block you. To prevent that you need to distribute your outgoing emails through a set of IPs. I used HAProxy for that along with a number of FreeBSD Jails. That solution is a bit tedious, even though after I started using Salt things became a bit easier it was still too complicated for my taste.

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Corrupted image_captcha In Drupal

2016-04-23 by Mohammad H. Al-Shami

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Moving A Magento Instance To A New Domain

2016-04-21 by Mohammad H. Al-Shami

Quick one here, when you move a Magento instance to a new domain or URL it will keep redirecting to the old address. There is a quick fix

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Bootstrapping PKGNG From Your Own Repository

2015-03-13 by Mohammad H. Al-Shami

I’ve been building my own PKGNG repositories with Poudriere lately. Some of the benefits include:

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HOWTO: Small Mail Server With Salt, Dovecot, And OpenSMTPD

2015-01-26 by Mohammad H. Al-Shami

Update: Sadly OpenSMTPD version 5.4.4 on FreeBSD broke the passwd table, I’m checking the Gills to get this fixed.

Update2: I am no longer using OpenSMTPD. I’ve switched to dma for servers that only need to send emails and went back to Postfix for servers that require an actual MTA. Not that OpenSMTPD is bad, I just prefer Postfix. I might reconcider in the future when OpenSMTPD is more mature.

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Perl One-liner To Generate htpasswd Passwords

2014-12-29 by Mohammad H. Al-Shami

Update: An easier way to do it that doesn’t require you to install anything special (Works with nginx)

openssl passwd -apr1

Instead of having to install Apache or use an untrusted website just to generate the required password, you can use the following perl one liner

perl -e 'chomp($password=<>);chomp($salt=`tr -dc A-Za-z0-9 </dev/urandom | head -c 1024`); print crypt($password,$salt)."\n";'

Using Your Own Router With The New @orangejo Modem

2014-12-03 by Mohammad H. Al-Shami

Update: I have since moved to Damamax and am MUCH happier with their service. Their network is more reliable, faster, and their support staff is wonderful. It’s a bit more expensive but considering the advantages I highly recommend switching if they cover your area.

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Recursively Upgrade Package Dependencies With pkgng

2014-11-11 by Mohammad H. Al-Shami

Update: I now just use pkg upgrade since I have better control over my package repo and it is a much better way to upgrade.

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