I've had to deal with this... and if you have control of BOTH ends (old
server and new) it's much easier...
If your "old" server is a QMT, you can add a file in the control folder
(usually /var/qmail/control) called smtproutes. The "REAL" functionality
of this feature is so that you can configure a "backup" SMTP server that
can queue mail for the main server until it is available again. However,
it is equally useful in your migration environment -- simply make the
"old" SMTP server a "backup" for the new one.
The formats for the file (and full documentation) is on the WIKI at
http://wiki.qmailtoaster.com/index.php/Smtproutes
I hope this helps.... someone!
Dan
Daniel McAllister, President
IT4SOHO, LLC
PO BOX 507
St. Petersburg, FL 33731-0507
877-IT4SOHO: Toll Free
727-647-7646 In Pinellas
813-464-2093 In Hillsborough
727-507-9435 Fax Only
"When did you do your last backup?"
Ask me about unattended offsite backup solutions...
to protect your business, not just your data!
Quinn Comendant wrote:
Hi all,
Is there a way to have qmail-send check actual MX records for a domain before
deciding if it is local or not (instead of by (more)rcpthosts and
virtualdomains)?
An issue comes up occasionally when a domain is added on our server which is
currently hosted somewhere else (i.e. it's a migration) and the DNS isn't
updated for awhile until the client is prepared to finalize the migration. The
problem is, until MX records are switched, they expect mail to be delivered to
their existing mail server (i.e. not us) however messages that are sent from
our server are delivered locally because the domain exists in (more)rcpthosts
and virtualdomains. Any users who send mail to their domain is not received (or
more likely, is bounced because the user has not added any mail accounts for
the domain).
Solutions I've thought of:
- Ask people to use a different SMTP server when sending messages to the domain
until DNS is migrated (i.e. smtp.gmail.com). PROBLEM: we can't possible insist
the hundreds of mail users on our system do this.
- Comment out the domain in the (more)rcpthosts and virtualdomains control
files. PROBLEM: when the DNS is finally switched for the domain, we'll most
likely forget to un-comment the configuration.
Any other ideas?
Quinn
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