Re: MTU and Postfix
On Sun, 04 Sep 2011 20:56:51 +0900, Osamu Aoki wrote:
> On Sun, Sep 04, 2011 at 10:40:29AM +0000, Camaleón wrote:
>> On Wed, 31 Aug 2011 16:09:23 +0000, Camaleón wrote:
>> > I'm still monitoring this but if this is the "cure" to prevent such
>> > errors, are there any expected drawbacks for lowering MTU
>> > "system-wide"?
>> Mmm, no replies yet...
>> Does it mean then that there are no gotchas to care about in setting a
>> MTU value of 1400 for a bonded interface? :-)
> Some router between you and outside have issue, I guess.
> It is a bit complicated. My best effort information is here:
Thanks... I should have imagined there must be something about this in
the manual :-)
I was indeed making that kind of tests to value what MTU size was the
best for that specific case and tried first with "1492" but messages were
still left in "deferred" queue. Once I changed to "1400" all of the
pending postings could finally be delivered.
I have now setup the bonded interface to stick to this MTU (1400) as
stated in section "5.8.2. Setting MTU".