Hello, I have a couple of vpopmail/qmail-based e-mail servers that have worked well for many years.
A few years ago, we began using the Calendar Server on MacOSX. The calendar server sits on an internet pipe which doesn't pass port 25, so I can't use the built-in mail server to handle calendar invites and replies. Luckily, the Calendar Server configuration allows you to set up an e-mail address which it will use to send invites via SMTP and receive replies to the invites via IMAP. Initially, I tried to set up an address on one of my vpopmail/qmail servers, as they service the domains which these calendar servers sit on. However, the Calendar Server uses "+" subaddressing, and vpopmail/qmail use "-" subaddressing. The qmail docs say that you can configure the subaddress separator character by changing the "-" to a "+" following the user name in /var/qmail/users/assign. In vpopmail, users aren't in the assign file - it seems to contain a listing of domains that vpopmail services. Unsurprisingly, changing the "-" to a "+" and running qmail-newu as the qmail docs suggest doesn't change the subaddressing behavior for that domain. The workaround since I did this research last has been to use a Gmail account specifically for each Calendar Server I maintained. This worked for a while, but then at some point recently, Gmail and Google Calendar started causing invites to be handled improperly. I'm not sure what conditions are necessary, but it seems like it has something to do with the recipient using Google Calendar instead of another calendar service with their Gmail address (and why wouldn't they?) In any case, I'm again looking into how to make a domain on one of my vpopmail/qmail servers use the "+" separator for subaddresses, rather than "-", and I'm coming up dry. I realize that changing the subaddress separator will have an effect on ezmlm-idx, which I use on this server, so that's why I only want to change the subaddress separator on a single domain. Any pointers? Thanks, -Tom !DSPAM:534c460734269808015307!
