On Tuesday 27 July 2021 10:38:57 Edward wrote: > On 7/26/21 11:07 PM, Michael wrote: > > On Monday 26 July 2021 07:39:09 pm William Morder via tde-users wrote: > >> I am still mystified about why the timestamps are apparently > >> out-of-sequence, regardless who responded to whom. Did it really take > >> nearly two days for an email to be delivered? > > > > Ah, yeah it did! Short answer is it got hung up internal to gmx.net for > > those ~two days. Below are the very stripped down headers: > > According to RFC 5321, section 4.5.4.1: > > Retries continue until the message is transmitted or the sender gives > > up; the give-up time generally needs to be at least*4-5 days*. It > > MAY be appropriate to set a shorter maximum number of retries for non- > > delivery notifications and equivalent error messages than for standard > > messages. The parameters to the retry algorithm MUST be configurable. > > 4-5 days would appear to be the allowable amount of time to deliver an > e-mail, before the server bounces it back to the sender. > > https://datatracker.ietf.org/doc/html/rfc5321#section-4.5.4.1 > Yes, I do know that emails *can* be delayed, and it doesn't mean anything especially weird or suspicious is going on. Sometimes those discrepancies like out-of-sequence time stamps mean nothing, and lead to nowhere. Most of my emails, sent or received, take only a few seconds to be delivered, no matter how far apart we may be in physical space; emails are seldom delayed more than a few minutes. On rare occasions I have had them arrive the next day, but never more than 24 hours. When such delays happen repeatedly, especially with the same person, or the same mailing list, then I start to wonder if there is some common factor involved. In the earlier occurrence on the TDE mailing list, I believe it was one Dan Youngquist whose emails were regularly out-of-sequence, so that he always appeared to be writing from about two hours in the future; and it wasn't just one or two emails, but several -- enough to notice. As I recall, something in his system was misconfigured (maybe UTC/local settings?) so that he appeared to be in a different time zone. Anyway, unless somebody has a startling revelation that will change everything, then my curiosity, at least, is satisfied. This most likely was due to some ordinary, mundane cause. I did not foresee that it would become such an involved discussion, but it's all good. Bill ____________________________________________________ tde-users mailing list -- users@xxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxx Web mail archive available at https://mail.trinitydesktop.org/mailman3/hyperkitty/list/users@xxxxxxxxxxxxxxxxxx
