The server changes are complete, but I need assistance from (semi-technical) members outside the North America / Europe to figure out if things are working as hoped. If you can help, please follow the steps I've laid out in the Tips & Tricks forum thread. Thanks for your help!
As an NP, I treat lots of penile discharge and the most common culprit is NGU (non-gonococcal urethritis), and zythromycin is the go to for these infections and works well. Other infections are also possible. Trichmoniasis is sometimes responsible, although men rarely have symptoms. Mycoplasma genitalium is another possibility and has been linked to chronic urethritis. Many places do not culture for it and while it is usually cleared with azithromycin, sometimes moxifloxacin is used as a second line treatment. It may also be that anatomically you may be more inclined to get NGU. I sometimes see this in patients with larger urethral openings. Continued recurrent infections without known re-exposure and after apparently successful initial treatment should be evaluated by a urology specialist.