Running Pmail v.4.91.1746 on Windows 10 PC.
The following happens on two separate machines running the same set-up, one a laptop, one a desktop.
When sending SMTP [edited], Pegasus hangs (aqua ring, no functionality, not even X out) for a time period - momentary with small size messages, longer with bigger attachments. The short ones are tolerable, but when sending a 10MB attachment, the total message send time can be several minutes of PMail hung up (progress clocks in short bursts, not slow crawl). If I try to use PMail during the 'pauses', it grays out and starts acting locked up. But either way, eventually coughs out the email.
The interesting bit is it only happens sending via one host SMTP [edited] server (to which I recently switched one account).
I have a different host with which sending pop this does not happen.
I have worked with the problem host (he's a small shop and very hands on) and we are not finding anything in logs that explains what's going. His end just shows a really slow pop transfer with no messages from my end to hold, or of any issue. On my end each package transfer is recorded, just with inexplicable time gaps between them when it hits the large attachment email. Doing this live with the host on the phone watching logs his logs are showing his system is just waiting on me, no error or problem indicator from me, nor on his end indicating it's his system pausing things.
I'm not too technically experienced (but a quick learner), he is experienced, and from what we see it seems like there's a PMail program / code issue with something about transferring to his server (which PMail does not have with the other host).
Any ideas?
