On Thu, 2005-01-13 at 14:32, Aleksandar Milivojevic wrote:
The only thing that is more complicated, IMHO, is if you already have users, and mail folders are in different format. Than you need to migrate it into the Cyrus.
And what if those users already have existing .forward or .procmailrc files? Can you maintain compatibility when you switch? Does delivery still work with the sendmail 'plussed' addresses (user+tag) for addresses that aren't picked off by a matching .forward+tag file?
Simple stuff from .forward (mail forwarded to another mail address), no problemos. Just move it into Sieve. Vacation program called from .forward, no problemos either. More complicated stuff, such as users calling custom mail filters, won't work. Those usually require user accounts anyhow, and that is something to avoid on big installations (actually, anything bigger than home installation, no custom mail filter programs, IMO).
Procmail stuff, user's will have to rebuild that from scratch using Sieve. Another possibility is keeping procmail, and calling Cyrus deliver program directly from it (instead as sendmail mailer). Some people are doing it, and it works. For simple procmail stuff, some automation tool could be written, but I wouldn't count on it being too reliable. Sieve isn't as versatile as procmail. However, majority of people are using it just to sort mail into different folders on the server. Something Sieve is perfectly capable of doing.
Plussed addresses should work with Cyrus. It is possible to configure Cyrus so that username+something will go to user's INBOX.something folder. If plussed address is to be forwarded, it can be done using Sieve.
-- Aleksandar Milivojevic <amilivojevic@xxxxxx> Pollard Banknote Limited Systems Administrator 1499 Buffalo Place Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
