[Dovecot] dsync replication errors

[Michael Grimm]

On 17.02.2013, at 11:08, Timo Sirainen <tss at iki.fi> wrote:

> There may be some other features that require unique hostnames in
> future. Anything where multiple Dovecot servers need to communicate
> between each others.

I'd like to come back to that issue in order to understand your statement cited below.

First of all: whenever you referred to "hostname" in this thread you have been using it as a synonym for the local part [1] of a FQDN, right?

I have both servers of mine configured to use identical local parts ("test") but different FQDN (aka "test.domainA.tldA" and "test.domainB.tldB"). Your fix has been to replace "my_hostname" by "my_hostdomain()", thus using "test.domainA.tldA" and "test.domainB.tldB" instead of "test", right?

> If some day there is such generic communication between Dovecot servers
> I'm planning on enforcing this requirement.

Given that all my interpretations of your statements are correct I do have difficulties in understanding why a "generic communication between Dovecot servers" should be limited to enforcing different local parts of all Dovecot servers implied instead of different FQDN? That would make much more sense regarding uniqueness in hostnames, IMHO. Two servers like "dovecot.forget-about.it" and "dovecot.you-name.it" should be able to communicate generically, again: IMHO.

BTW: I had had defined "hostname=" in dovecot.conf identically using completely different *but* identical FQDNs "mail.my-domain.tld" because of:

| conf.d/15-lda.conf:

| # Hostname to use in various parts of sent mails, eg. in Message-Id.
| # Default is the system's real hostname.
| #hostname = 

At least my_hostdomain() doesn't care about that setting, right? 

Again, I can live with mandatory different local hostname parts, but I would love to understand why ...

With kind regards,
Michael


[1] http://en.wikipedia.org/wiki/Hostname